Basic Theme uses plain bootstrap and does not have any custom colors & styles. This article will show you how to add dark mode support to the [Basic Theme](https://docs.abp.io/en/abp/latest/UI/AspNetCore/Basic-Theme).
Bootstrap brings [Color Modes](https://getbootstrap.com/docs/5.3/customize/color-modes/#dark-mode) feature with the version **5.3**. This feature allows you to add dark mode support to your website with a single line of code. Adding the `data-bs-theme="dark"` attribute changes the color mode of the element to dark mode.
Bootstrap brings the [Color Modes](https://getbootstrap.com/docs/5.3/customize/color-modes/#dark-mode) feature with version **5.3**. This feature allows you to add dark mode support to your website with a single line of code. Adding the `data-bs-theme="dark"` attribute changes the color mode of the element to dark mode.