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Buttons
The only times you’ll likely ever use the <button> element is when you create a form, or add a modal to the page. Never use a <button> element, or even button styling, just to link to another page or document.
There are UX and cognitive accessiblity issues with making hyperlinks look like buttons.
- Buttons perform actions.
- Links are for navigation.
Use the button classes on an <a> (rarely and not just to link to another page), <button>, or <input> element.
Sizes
Add .btn-lg , .btn-sm , or .btn-xs for additional sizes.
Create block level buttons—those that span the full width of a parent— by adding .btn-block.