# Popular custom CSS

- [Change background color](/keystone/advanced-customizations/using-custom-css/popular-css-customizations/change-background-color.md)
- [Change button color](/keystone/advanced-customizations/using-custom-css/popular-css-customizations/change-button-color.md)
- [Change heading color](/keystone/advanced-customizations/using-custom-css/popular-css-customizations/change-heading-color.md)
- [Change button size](/keystone/advanced-customizations/using-custom-css/popular-css-customizations/adjust-button-size.md)