You can use a link with the href attribute, or a button with the data-coreui-target attribute. In both samples, the data-coreui-toggle="collapse"" is required.

The collapse plugin also supports horizontal collapsing. Add the .collapse-horizontal modifier class to transition the width instead of height and set a width on the immediate child element. Feel free to write your own custom Sass, use inline styles, or use our width utilities.

A <button> or <a> can show and hide multiple elements by referencing them with a selector in its href or data-coreui-target attribute. Multiple <button> or <a> can show and hide an element if they each reference it with their href or data-coreui-target attribute