diff --git a/src/components/Challenge/ChallengeCardUnlocked.tsx b/src/components/Challenge/ChallengeCardUnlocked.tsx
index 4014dcf38429dfbeb26ca2aee859528064cf5985..4369a85e4606cec9a46e53ce9a00b8315b694523 100644
--- a/src/components/Challenge/ChallengeCardUnlocked.tsx
+++ b/src/components/Challenge/ChallengeCardUnlocked.tsx
@@ -62,7 +62,7 @@ const ChallengeCardUnlocked: React.FC<ChallengeCardUnlockedProps> = ({
           onClick={launchChallenge}
           classes={{
             root: 'btn-duel-active',
-            label: 'text-16-bold-capitalize',
+            label: 'text-16-bold',
           }}
         >
           {t('challenge.card.unlocked.launch')}
diff --git a/src/components/Challenge/ChallengeNoFluidModal.tsx b/src/components/Challenge/ChallengeNoFluidModal.tsx
index 80386dab97e2951a6df6261632b71bde68a8dbf6..516663049bddc86e37847b175aceb1f37de57d25 100644
--- a/src/components/Challenge/ChallengeNoFluidModal.tsx
+++ b/src/components/Challenge/ChallengeNoFluidModal.tsx
@@ -26,7 +26,7 @@ const ChallengeNoFluidModal: React.FC<ChallengeNoFluidModalProps> = ({
           onClick={handleCloseClick}
           classes={{
             root: 'btn-secondary-negative',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('COMMON.MODAL_OK')}
diff --git a/src/components/Challenge/__snapshots__/ChallengeNoFluidModal.spec.tsx.snap b/src/components/Challenge/__snapshots__/ChallengeNoFluidModal.spec.tsx.snap
index 61c3113d6f24c940da8a1ca0eac585a6497248a0..7585e509aba6f25bdae06f143c91bc0a8bb76e9e 100644
--- a/src/components/Challenge/__snapshots__/ChallengeNoFluidModal.spec.tsx.snap
+++ b/src/components/Challenge/__snapshots__/ChallengeNoFluidModal.spec.tsx.snap
@@ -20,7 +20,7 @@ exports[`ChallengeNoFluidModal component should be rendered correctly opened 1`]
     <WithStyles(Button)
       classes={
         Object {
-          "label": "text-16-normal-capitalize",
+          "label": "text-16-normal",
           "root": "btn-secondary-negative",
         }
       }
diff --git a/src/components/Connection/ConnectionFormLogin.tsx b/src/components/Connection/ConnectionFormLogin.tsx
index 3c0e13fcd1460b60bf0b0c4bcd432db72bfc2094..b99154facc9bff88410dc6dfe5af5f7d75308ff3 100644
--- a/src/components/Connection/ConnectionFormLogin.tsx
+++ b/src/components/Connection/ConnectionFormLogin.tsx
@@ -210,7 +210,7 @@ const ConnectionFormLogin: React.FC<ConnectionFormLoginProps> = ({
             disabled={loading}
             classes={{
               root: 'btn-highlight',
-              label: 'text-16-bold-capitalize',
+              label: 'text-16-bold',
             }}
           >
             <div className="authform-button-content">
@@ -238,7 +238,7 @@ const ConnectionFormLogin: React.FC<ConnectionFormLoginProps> = ({
           onClick={() => window.open(siteLink, '_blank')}
           classes={{
             root: 'btn-secondary-positive',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('auth.' + konnectorSlug + '.create_account')}
diff --git a/src/components/Connection/ConnectionFormOAuth.tsx b/src/components/Connection/ConnectionFormOAuth.tsx
index 9215375a2b48f8228e9899c98efd49781e259194..98ae1bb8e543cd046bebfa1681c37faa20d65adb 100644
--- a/src/components/Connection/ConnectionFormOAuth.tsx
+++ b/src/components/Connection/ConnectionFormOAuth.tsx
@@ -91,7 +91,7 @@ const ConnectionFormOAuth: React.FC<ConnectionFormOAuthProps> = ({
           onClick={() => window.open(siteLink, '_blank')}
           classes={{
             root: 'btn-secondary-positive',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('auth.' + konnectorSlug + '.create_account')}
diff --git a/src/components/Connection/ConnectionNotFound.tsx b/src/components/Connection/ConnectionNotFound.tsx
index f06cee64b454f7dcd4dee21c97e2d49436c22047..1019d1dad46dbf8cbd96a20e2eb949ca7753f1c8 100644
--- a/src/components/Connection/ConnectionNotFound.tsx
+++ b/src/components/Connection/ConnectionNotFound.tsx
@@ -29,7 +29,7 @@ const ConnectionNotFound: React.FC<ConnectionNotFoundProps> = ({
           onClick={openKonnectorURL}
           classes={{
             root: 'btn-highlight',
-            label: 'text-16-bold-capitalize',
+            label: 'text-16-bold',
           }}
         >
           {t('KONNECTORCONFIG.BTN_INSTALL')}
diff --git a/src/components/Connection/ConnectionResult.tsx b/src/components/Connection/ConnectionResult.tsx
index 8e325ee92a5dafb5dddda2ea6d23a3b8fb496058..c24126040a5c511f2c051edf99fe797c5af5eaba 100644
--- a/src/components/Connection/ConnectionResult.tsx
+++ b/src/components/Connection/ConnectionResult.tsx
@@ -123,7 +123,7 @@ const ConnectionResult: React.FC<ConnectionResultProps> = ({
           disabled={updating}
           classes={{
             root: 'btn-secondary-positive',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('KONNECTORCONFIG.BTN_DELETE')}
@@ -133,7 +133,7 @@ const ConnectionResult: React.FC<ConnectionResultProps> = ({
           disabled={updating}
           classes={{
             root: 'btn-highlight',
-            label: 'text-16-bold-capitalize',
+            label: 'text-16-bold',
           }}
         >
           {updating ? (
diff --git a/src/components/Connection/ModalGRDF.tsx b/src/components/Connection/ModalGRDF.tsx
index 1c3fd279490323d8114f5691471bfdebd1eac9c0..8c3fe3100d490935db953f9f4f9167b2206eb32a 100644
--- a/src/components/Connection/ModalGRDF.tsx
+++ b/src/components/Connection/ModalGRDF.tsx
@@ -63,7 +63,7 @@ const ModalGRDF: React.FC<ModalGRDFProps> = ({
           disabled={isWaiting}
           classes={{
             root: 'btn-highlight',
-            label: 'text-16-bold-capitalize',
+            label: 'text-16-bold',
           }}
         >
           {t('auth.grdfgrandlyon.authModal.buttonText')}
diff --git a/src/components/Connection/OAuthForm.tsx b/src/components/Connection/OAuthForm.tsx
index db8d88837018574c36e3ebcbd76e97ffce051501..ac86fecb266c6dbaec7df8d0e7152160c33e180d 100644
--- a/src/components/Connection/OAuthForm.tsx
+++ b/src/components/Connection/OAuthForm.tsx
@@ -78,7 +78,7 @@ const OAuthForm: React.FC<OAuthFormProps> = ({
         disabled={isWaiting}
         classes={{
           root: 'btn-highlight',
-          label: 'text-16-bold-capitalize',
+          label: 'text-16-bold',
         }}
       >
         <div className="authform-button-content">
diff --git a/src/components/ConsumptionNavigator/ActivateHalfHourLoad.tsx b/src/components/ConsumptionNavigator/ActivateHalfHourLoad.tsx
index 34fb4ab9051889f1313cc08f25dd48e8d52f982c..dc09d596ab55b8b27749fca08c8887792d031d47 100644
--- a/src/components/ConsumptionNavigator/ActivateHalfHourLoad.tsx
+++ b/src/components/ConsumptionNavigator/ActivateHalfHourLoad.tsx
@@ -27,7 +27,7 @@ const ActivateHalfHourLoad = () => {
         }}
         classes={{
           root: 'btn-highlight',
-          label: 'text-16-bold-capitalize',
+          label: 'text-16-bold',
         }}
       >
         <div className="oauthform-button-content">
diff --git a/src/components/Duel/DuelEmptyValueModal.tsx b/src/components/Duel/DuelEmptyValueModal.tsx
index ba85d5a74fa32ae05083a10d22db9c88c9459129..ccc340d074bfc2b37850ab7ed125fa9a4dfdaa69 100644
--- a/src/components/Duel/DuelEmptyValueModal.tsx
+++ b/src/components/Duel/DuelEmptyValueModal.tsx
@@ -37,7 +37,7 @@ const DuelEmptyValueModal: React.FC<DuelEmptyValueModalProps> = ({
             onClick={handleCloseClick}
             classes={{
               root: 'btn-secondary-negative',
-              label: 'text-16-normal-capitalize',
+              label: 'text-16-normal',
             }}
           >
             {t('duel.empty_value.button')}
diff --git a/src/components/Duel/DuelError.tsx b/src/components/Duel/DuelError.tsx
index 4991008d7f4f59d43d01cf9602fef6295abe193c..1482971266e6db8752a3c0eee1987626c6042b7f 100644
--- a/src/components/Duel/DuelError.tsx
+++ b/src/components/Duel/DuelError.tsx
@@ -20,7 +20,7 @@ const DuelError: React.FC = () => {
           onClick={goBack}
           classes={{
             root: 'btn-secondary-negative',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('duel.error_go_back')}
diff --git a/src/components/Duel/DuelResultModal.tsx b/src/components/Duel/DuelResultModal.tsx
index 8111004005313dea5538af40162ad7e4d24c32d7..f756b879b13669672a6eb6b4e740028531c5ce12 100644
--- a/src/components/Duel/DuelResultModal.tsx
+++ b/src/components/Duel/DuelResultModal.tsx
@@ -78,7 +78,7 @@ const DuelResultModal: React.FC<DuelResultModalProps> = ({
             onClick={handleCloseClick}
             classes={{
               root: 'btn-secondary-negative',
-              label: 'text-16-normal-capitalize',
+              label: 'text-16-normal',
             }}
           >
             {empty
diff --git a/src/components/Duel/DuelUnlocked.tsx b/src/components/Duel/DuelUnlocked.tsx
index 5a410fa120d130981beca814b3ff9299db026aa9..a516ac66e3b9bc5f436a10fb8dbcf5e2db0da2c1 100644
--- a/src/components/Duel/DuelUnlocked.tsx
+++ b/src/components/Duel/DuelUnlocked.tsx
@@ -71,7 +71,7 @@ const DuelUnlocked: React.FC<DuelUnlockedProps> = ({
             onClick={launchDuel}
             classes={{
               root: 'btn-secondary-negative',
-              label: 'text-16-normal-capitalize',
+              label: 'text-16-normal',
             }}
           >
             {t('duel.start_button')}
diff --git a/src/components/Duel/__snapshots__/DuelError.spec.tsx.snap b/src/components/Duel/__snapshots__/DuelError.spec.tsx.snap
index 08900b349165feffc8c021f962ede79297f48fc2..ec1bc929298fcc6aba750263f91b6e34124c4608 100644
--- a/src/components/Duel/__snapshots__/DuelError.spec.tsx.snap
+++ b/src/components/Duel/__snapshots__/DuelError.spec.tsx.snap
@@ -15,7 +15,7 @@ exports[`DuelError component should be rendered correctly 1`] = `
     <WithStyles(Button)
       classes={
         Object {
-          "label": "text-16-normal-capitalize",
+          "label": "text-16-normal",
           "root": "btn-secondary-negative",
         }
       }
diff --git a/src/components/Ecogesture/EcogestureList.tsx b/src/components/Ecogesture/EcogestureList.tsx
index a2352369d86afac65f7d2c887565cd6b24d52fd1..bda31b725525280732acf498e7952038f12837cc 100644
--- a/src/components/Ecogesture/EcogestureList.tsx
+++ b/src/components/Ecogesture/EcogestureList.tsx
@@ -127,7 +127,7 @@ const EcogesturesList: React.FC = () => {
                 <MuiButton
                   classes={{
                     root: 'btn-secondary-negative',
-                    label: 'text-14-normal-capitalize',
+                    label: 'text-14-normal',
                   }}
                 >
                   <StyledIcon icon={SortIcon} size={24} />
diff --git a/src/components/Ecogesture/EcogestureModal.tsx b/src/components/Ecogesture/EcogestureModal.tsx
index 00d20bb9e288c5310009f338e7c5cb4c6f5a4825..fab80a1ab011b13511a63083c27f118bac0f8949 100644
--- a/src/components/Ecogesture/EcogestureModal.tsx
+++ b/src/components/Ecogesture/EcogestureModal.tsx
@@ -93,7 +93,7 @@ const EcogestureModal: React.FC<EcogestureModalProps> = ({
               onClick={selectAction}
               classes={{
                 root: 'btn-secondary-negative',
-                label: 'text-14-normal-capitalize',
+                label: 'text-14-normal',
               }}
             >
               {t('action.select_action')}
@@ -111,7 +111,7 @@ const EcogestureModal: React.FC<EcogestureModalProps> = ({
                 onClick={toggleMoreDetail}
                 classes={{
                   root: 'btn-secondary-negative',
-                  label: 'text-14-normal-capitalize',
+                  label: 'text-14-normal',
                 }}
               >
                 {isMoreDetail
diff --git a/src/components/Exploration/ExplorationError.tsx b/src/components/Exploration/ExplorationError.tsx
index 3fa624d2609c5fb9504994a86341fe8f820330d4..10041e46d43f991398bd612fddaf2e3d2cb3f724 100644
--- a/src/components/Exploration/ExplorationError.tsx
+++ b/src/components/Exploration/ExplorationError.tsx
@@ -22,7 +22,7 @@ const ExplorationError: React.FC = () => {
           onClick={goBack}
           classes={{
             root: 'btn-secondary-negative',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('exploration.go_back')}
diff --git a/src/components/Exploration/ExplorationFinished.tsx b/src/components/Exploration/ExplorationFinished.tsx
index 70c593f89ca020ea188212a11236b0ec48b2a428..0b6f2aea89874d91c3160e79fe258feb7d1a8bab 100644
--- a/src/components/Exploration/ExplorationFinished.tsx
+++ b/src/components/Exploration/ExplorationFinished.tsx
@@ -63,7 +63,7 @@ const ExplorationFinished: React.FC<ExplorationFinishedProps> = ({
           onClick={goBack}
           classes={{
             root: 'btn-secondary-negative',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('exploration.confirm')}
diff --git a/src/components/Exploration/ExplorationOngoing.tsx b/src/components/Exploration/ExplorationOngoing.tsx
index f149f775a3d5b15b256390f70f595f19abd5d0f1..bc54cdcdc3fac5e644248fdcdb0b8f646be38f3b 100644
--- a/src/components/Exploration/ExplorationOngoing.tsx
+++ b/src/components/Exploration/ExplorationOngoing.tsx
@@ -62,7 +62,7 @@ const ExplorationOngoing: React.FC<ExplorationOngoingProps> = ({
               onClick={validExploration}
               classes={{
                 root: 'btn-secondary-negative',
-                label: 'text-16-normal-capitalize',
+                label: 'text-16-normal',
               }}
             >
               {t('exploration.already_done')}
@@ -71,7 +71,7 @@ const ExplorationOngoing: React.FC<ExplorationOngoingProps> = ({
               onClick={goBack}
               classes={{
                 root: 'btn-secondary-negative',
-                label: 'text-16-normal-capitalize',
+                label: 'text-16-normal',
               }}
             >
               {t('exploration.come_back')}
@@ -87,7 +87,7 @@ const ExplorationOngoing: React.FC<ExplorationOngoingProps> = ({
               onClick={startExploration}
               classes={{
                 root: 'btn-secondary-negative',
-                label: 'text-16-normal-capitalize',
+                label: 'text-16-normal',
               }}
             >
               {t('exploration.start')}
diff --git a/src/components/Favorite/FavoriteModal.tsx b/src/components/Favorite/FavoriteModal.tsx
index 9ccd51fe60d42d93ac030f28b4b1fd8f1576b341..bfadd3ab278b12d7dff53776c3cf36fffce9faaf 100644
--- a/src/components/Favorite/FavoriteModal.tsx
+++ b/src/components/Favorite/FavoriteModal.tsx
@@ -71,7 +71,7 @@ const FavoriteModalContainer: React.FC<FavoriteModalContainerProps> = ({
           onClick={handleAddToFavorite}
           classes={{
             root: 'btn-highlight',
-            label: 'text-16-bold-capitalize',
+            label: 'text-16-bold',
           }}
         >
           {t('COMMON.FAVORITE_MODAL_ADD_TO_FAVORITE')}
diff --git a/src/components/Feedback/FeedbackModal.tsx b/src/components/Feedback/FeedbackModal.tsx
index 01dd77301ea7a854c06b7622d5786e3536538a1f..9e8a7f09689c7be765056eca082e9a77f7436b93 100644
--- a/src/components/Feedback/FeedbackModal.tsx
+++ b/src/components/Feedback/FeedbackModal.tsx
@@ -183,7 +183,7 @@ const FeedbackModal: React.FC<FeedbackModalProps> = ({
               variant={'contained'}
               classes={{
                 root: 'btn-highlight',
-                label: 'text-16-bold-capitalize',
+                label: 'text-16-bold',
               }}
             >
               {t('feedback.ok')}
@@ -219,7 +219,7 @@ const FeedbackModal: React.FC<FeedbackModalProps> = ({
               disabled={sending}
               classes={{
                 root: 'btn-highlight',
-                label: 'text-16-bold-capitalize',
+                label: 'text-16-bold',
               }}
             >
               {t('feedback.send')}
diff --git a/src/components/Feedback/__snapshots__/FeedbackModal.spec.tsx.snap b/src/components/Feedback/__snapshots__/FeedbackModal.spec.tsx.snap
index f47d409387e7d4eb761ed21b3b9649fec9b36fe2..0cae3659d86ffafe7dbeed84d08726a0a732df7b 100644
--- a/src/components/Feedback/__snapshots__/FeedbackModal.spec.tsx.snap
+++ b/src/components/Feedback/__snapshots__/FeedbackModal.spec.tsx.snap
@@ -90,7 +90,7 @@ exports[`FeedbackModal component should render the component 1`] = `
       <WithStyles(Button)
         classes={
           Object {
-            "label": "text-16-bold-capitalize",
+            "label": "text-16-bold",
             "root": "btn-highlight",
           }
         }
diff --git a/src/components/Home/OldFluidDataModal.tsx b/src/components/Home/OldFluidDataModal.tsx
index 81111109b5202377c6021e87e4eb460df34c630f..b57af93d7afa1fe023b15f08c77f0da19ce1469c 100644
--- a/src/components/Home/OldFluidDataModal.tsx
+++ b/src/components/Home/OldFluidDataModal.tsx
@@ -80,7 +80,7 @@ const OldFluidDataModal: React.FC<OldFluidDataModalProps> = ({
                 onClick={handleCloseClick}
                 classes={{
                   root: 'btn-secondary-negative',
-                  label: 'text-16-normal-capitalize',
+                  label: 'text-16-normal',
                 }}
               >
                 {t('modalOldData.later')}
@@ -89,7 +89,7 @@ const OldFluidDataModal: React.FC<OldFluidDataModalProps> = ({
                 onClick={redirectTrue}
                 classes={{
                   root: 'btn-highlight',
-                  label: 'text-16-bold-capitalize',
+                  label: 'text-16-bold',
                 }}
               >
                 {t('modalOldData.accessButton')}
@@ -117,7 +117,7 @@ const OldFluidDataModal: React.FC<OldFluidDataModalProps> = ({
               onClick={handleCloseClick}
               classes={{
                 root: 'btn-highlight',
-                label: 'text-16-bold-capitalize',
+                label: 'text-16-bold',
               }}
             >
               Ok
diff --git a/src/components/Home/__snapshots__/OldFluidDataModal.spec.tsx.snap b/src/components/Home/__snapshots__/OldFluidDataModal.spec.tsx.snap
index f7d96567f3aba0ee984f4553bcf3e092ea0ea066..0bbb1ce3fdd2518ff9defda47158e28c78f38ea3 100644
--- a/src/components/Home/__snapshots__/OldFluidDataModal.spec.tsx.snap
+++ b/src/components/Home/__snapshots__/OldFluidDataModal.spec.tsx.snap
@@ -52,7 +52,7 @@ exports[`OldFluidDataModal component should be rendered correctly 1`] = `
       <WithStyles(Button)
         classes={
           Object {
-            "label": "text-16-bold-capitalize",
+            "label": "text-16-bold",
             "root": "btn-highlight",
           }
         }
diff --git a/src/components/Konnector/KonnectorModal.tsx b/src/components/Konnector/KonnectorModal.tsx
index f5249b7ca23575b699fb00af634b620f6142accc..58d83f07944efff23cde6d2e83534c51c9e347cf 100644
--- a/src/components/Konnector/KonnectorModal.tsx
+++ b/src/components/Konnector/KonnectorModal.tsx
@@ -123,7 +123,7 @@ const KonnectorModal: React.FC<KonnectorModalProps> = ({
                 onClick={() => handleCloseClick()}
                 classes={{
                   root: 'btn-highlight',
-                  label: 'text-16-bold-capitalize',
+                  label: 'text-16-bold',
                 }}
               >
                 <div>{t('KONNECTORCONFIG.OK')}</div>
diff --git a/src/components/Quiz/QuizBegin.tsx b/src/components/Quiz/QuizBegin.tsx
index 008e6bdf1da4f077b91b15c020b70101e8b60767..d70ea91f373f5578527eba1a3fbd68c2e1f1db4d 100644
--- a/src/components/Quiz/QuizBegin.tsx
+++ b/src/components/Quiz/QuizBegin.tsx
@@ -48,7 +48,7 @@ const QuizBegin: React.FC<QuizBeginProps> = ({
             onClick={launchQuiz}
             classes={{
               root: 'btn-secondary-negative',
-              label: 'text-16-normal-capitalize',
+              label: 'text-16-normal',
             }}
           >
             {t('duel.start_button')}
diff --git a/src/components/Quiz/QuizCustomQuestionContent.tsx b/src/components/Quiz/QuizCustomQuestionContent.tsx
index 77744bf280a446cefc0d7a706e96b4134f635544..d72ad755dbf8a1baee792b234e0cbbf2eb2080c6 100644
--- a/src/components/Quiz/QuizCustomQuestionContent.tsx
+++ b/src/components/Quiz/QuizCustomQuestionContent.tsx
@@ -110,7 +110,7 @@ const QuizCustomQuestionContent: React.FC<QuizCustomQuestionContent> = ({
           onClick={validateQuestion}
           classes={{
             root: 'btn-secondary-negative',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('quiz.confirm')}
diff --git a/src/components/Quiz/QuizExplanationModal.tsx b/src/components/Quiz/QuizExplanationModal.tsx
index 2ac8f7ea2e2b07bfb89143b32fb9bd9cec00e78e..b7b35fba3d518b320e4312c6af20c7856e76d0b9 100644
--- a/src/components/Quiz/QuizExplanationModal.tsx
+++ b/src/components/Quiz/QuizExplanationModal.tsx
@@ -62,7 +62,7 @@ const QuizExplanationModal: React.FC<QuizExplanationModalProps> = ({
             onClick={goNext}
             classes={{
               root: 'btn-secondary-negative',
-              label: 'text-16-normal-capitalize',
+              label: 'text-16-normal',
             }}
           >
             {t('quiz.next')}
diff --git a/src/components/Quiz/QuizFinish.tsx b/src/components/Quiz/QuizFinish.tsx
index dd4aba49d12d70d8ef2fe2a8e8a4104e7210ff30..451f33cb53c277438dac3c0f5db255356d760975 100644
--- a/src/components/Quiz/QuizFinish.tsx
+++ b/src/components/Quiz/QuizFinish.tsx
@@ -65,7 +65,7 @@ const QuizFinish: React.FC<QuizFinishProps> = ({
               onClick={goBack}
               classes={{
                 root: 'btn-secondary-negative',
-                label: 'text-16-normal-capitalize',
+                label: 'text-16-normal',
               }}
             >
               {t('quiz.youpi')}
@@ -77,7 +77,7 @@ const QuizFinish: React.FC<QuizFinishProps> = ({
               onClick={goBack}
               classes={{
                 root: 'btn-secondary-negative',
-                label: 'text-16-normal-capitalize',
+                label: 'text-16-normal',
               }}
             >
               {t('quiz.go_back')}
@@ -86,7 +86,7 @@ const QuizFinish: React.FC<QuizFinishProps> = ({
               onClick={retryQuiz}
               classes={{
                 root: 'btn-secondary-negative',
-                label: 'text-16-normal-capitalize',
+                label: 'text-16-normal',
               }}
             >
               {t('quiz.try_again')}
diff --git a/src/components/Quiz/QuizQuestionContent.tsx b/src/components/Quiz/QuizQuestionContent.tsx
index 97366bd96ea67481259db2ef0fa88c9718703939..6c236ac9bda4c5ba161e619459950c024bef24bc 100644
--- a/src/components/Quiz/QuizQuestionContent.tsx
+++ b/src/components/Quiz/QuizQuestionContent.tsx
@@ -120,7 +120,7 @@ const QuizQuestionContent: React.FC<QuizQuestionContent> = ({
           onClick={validateQuestion}
           classes={{
             root: 'btn-secondary-negative',
-            label: 'text-16-normal-capitalize',
+            label: 'text-16-normal',
           }}
         >
           {t('quiz.confirm')}
diff --git a/src/components/Splash/SplashScreenError.tsx b/src/components/Splash/SplashScreenError.tsx
index 4ae2e9e5b17b088e5c6e31a10c902e9abdd01197..996db57da7bdfb0860f870bb7de94faed7827d29 100644
--- a/src/components/Splash/SplashScreenError.tsx
+++ b/src/components/Splash/SplashScreenError.tsx
@@ -48,7 +48,7 @@ const SplashScreenError: React.FC = () => {
           onClick={() => window.location.reload()}
           classes={{
             root: 'btn-highlight',
-            label: 'text-16-bold-capitalize',
+            label: 'text-16-bold',
           }}
         >
           {t('LOADING.RELOAD')}
diff --git a/src/components/Splash/__snapshots__/SplashScreenError.spec.tsx.snap b/src/components/Splash/__snapshots__/SplashScreenError.spec.tsx.snap
index 0182d11aa09243fec50f2e28ab2aed1169e8b033..a75f15714ebbd6c711f1d8796f18d0a2ce300c31 100644
--- a/src/components/Splash/__snapshots__/SplashScreenError.spec.tsx.snap
+++ b/src/components/Splash/__snapshots__/SplashScreenError.spec.tsx.snap
@@ -4260,7 +4260,7 @@ exports[`SplashScreenError component should be rendered correctly 1`] = `
       className="splash-footer-button"
       classes={
         Object {
-          "label": "text-16-bold-capitalize",
+          "label": "text-16-bold",
           "root": "btn-highlight",
         }
       }
diff --git a/src/components/Welcome/WelcomeModal.tsx b/src/components/Welcome/WelcomeModal.tsx
index c70d8d3feb3d1e8507c365e53bc86e10194b3ad9..72a2784ee77b33c0619f48464c39f84f276b0ad3 100644
--- a/src/components/Welcome/WelcomeModal.tsx
+++ b/src/components/Welcome/WelcomeModal.tsx
@@ -34,7 +34,7 @@ const WelcomeModal: React.FC<WelcomeModalProps> = ({
         onClick={handleCloseClick}
         classes={{
           root: 'btn-highlight',
-          label: 'text-16-bold-capitalize',
+          label: 'text-16-bold',
         }}
       >
         {t('COMMON.MODAL_OK')}
diff --git a/src/components/Welcome/__snapshots__/WelcomeModal.spec.tsx.snap b/src/components/Welcome/__snapshots__/WelcomeModal.spec.tsx.snap
index 50a6b503b2732d31dbd8d649483fc98c3c3b7e85..3fc68041e5ffc46827f8c96c372ad44dcfc692f8 100644
--- a/src/components/Welcome/__snapshots__/WelcomeModal.spec.tsx.snap
+++ b/src/components/Welcome/__snapshots__/WelcomeModal.spec.tsx.snap
@@ -29,7 +29,7 @@ exports[`WelcomeModal component should be rendered correctly opened 1`] = `
     className="button-ok"
     classes={
       Object {
-        "label": "text-16-bold-capitalize",
+        "label": "text-16-bold",
         "root": "btn-highlight",
       }
     }
diff --git a/src/styles/base/_mixins.scss b/src/styles/base/_mixins.scss
index 972d5d29abcb1c49b2f11f76b486e9f5bab9fc16..29e45828f5dbf8bc81c9cca26d5f01fb16240920 100644
--- a/src/styles/base/_mixins.scss
+++ b/src/styles/base/_mixins.scss
@@ -11,6 +11,7 @@
   margin: 1.5rem 0 0;
   padding: 0.5rem 2.5rem;
   width: 100%;
+  text-transform: initial;
   span:first-child {
     color: $text-color;
   }