feat(structure-list): update layout

src/app/header/header.component.html

src/app/header/header.component.scss

src/app/home/home.component.html

src/app/structure-list/structure-list.component.html

src/app/structure-list/structure-list.component.scss

src/app/structure-list/structure-list.component.ts

src/assets/scss/_color.scss

src/assets/scss/_icons.scss

src/assets/scss/_typography.scss

src/styles.scss