Border & OutlineBorder Width
Yumma CSS 3.10 🎉

Border Width

Controls the width of the borders of an element.

Widely available

This feature is well established and works across many devices and browser versions.

Chrome
Edge
Firefox
Safari

bw-0border-width: 0px;
bw-1border-width: 1px;
bw-2border-width: 2px;
bw-3border-width: 3px;
bw-4border-width: 4px;
bw-5border-width: 5px;
bw-6border-width: 6px;
bw-7border-width: 7px;
bw-8border-width: 8px;
A
B
C
<div class="d-g g-16 gtc-1 sm:gtc-3">
  <div class="ai-c bw-1 bc-indigo bs-s d-f d-16 jc-c c-indigo">A</div>
  <div class="ai-c bw-2 bc-indigo bs-s d-f d-16 jc-c c-indigo">B</div>
  <div class="ai-c bw-3 bc-indigo bs-s d-f d-16 jc-c c-indigo">C</div>
</div>

Border Top Width

Controls the width of the top border of an element.

Widely available

This feature is well established and works across many devices and browser versions.

Chrome
Edge
Firefox
Safari

btw-0border-top-width: 0px;
btw-1border-top-width: 1px;
btw-2border-top-width: 2px;
btw-3border-top-width: 3px;
btw-4border-top-width: 4px;
btw-5border-top-width: 5px;
btw-6border-top-width: 6px;
btw-7border-top-width: 7px;
btw-8border-top-width: 8px;
A
B
C
  <div class="d-g g-16 gtc-1 sm:gtc-3">
    <div class="ai-c btw-1 bc-indigo bs-s d-f d-16 jc-c c-indigo">A</div>
    <div class="ai-c btw-2 bc-indigo bs-s d-f d-16 jc-c c-indigo">B</div>
    <div class="ai-c btw-3 bc-indigo bs-s d-f d-16 jc-c c-indigo">C</div>
  </div>

Border Right Width

Controls the width of the right border of an element.

Widely available

This feature is well established and works across many devices and browser versions.

Chrome
Edge
Firefox
Safari

brw-0border-right-width: 0px;
brw-1border-right-width: 1px;
brw-2border-right-width: 2px;
brw-3border-right-width: 3px;
brw-4border-right-width: 4px;
brw-5border-right-width: 5px;
brw-6border-right-width: 6px;
brw-7border-right-width: 7px;
brw-8border-right-width: 8px;
A
B
C
  <div class="d-g g-16 gtc-1 sm:gtc-3">
    <div class="ai-c brw-1 bc-indigo bs-s d-f d-16 jc-c c-indigo">A</div>
    <div class="ai-c brw-2 bc-indigo bs-s d-f d-16 jc-c c-indigo">B</div>
    <div class="ai-c brw-3 bc-indigo bs-s d-f d-16 jc-c c-indigo">C</div>
  </div>

Border Bottom Width

Controls the width of the bottom border of an element.

Widely available

This feature is well established and works across many devices and browser versions.

Chrome
Edge
Firefox
Safari

bbw-0border-bottom-width: 0px;
bbw-1border-bottom-width: 1px;
bbw-2border-bottom-width: 2px;
bbw-3border-bottom-width: 3px;
bbw-4border-bottom-width: 4px;
bbw-5border-bottom-width: 5px;
bbw-6border-bottom-width: 6px;
bbw-7border-bottom-width: 7px;
bbw-8border-bottom-width: 8px;
A
B
C
  <div class="d-g g-16 gtc-1 sm:gtc-3">
    <div class="ai-c bbw-1 bc-indigo bs-s d-f d-16 jc-c c-indigo">A</div>
    <div class="ai-c bbw-2 bc-indigo bs-s d-f d-16 jc-c c-indigo">B</div>
    <div class="ai-c bbw-3 bc-indigo bs-s d-f d-16 jc-c c-indigo">C</div>
  </div>

Border Left Width

Controls the width of the left border of an element.

Widely available

This feature is well established and works across many devices and browser versions.

Chrome
Edge
Firefox
Safari

blw-0border-left-width: 0px;
blw-1border-left-width: 1px;
blw-2border-left-width: 2px;
blw-3border-left-width: 3px;
blw-4border-left-width: 4px;
blw-5border-left-width: 5px;
blw-6border-left-width: 6px;
blw-7border-left-width: 7px;
blw-8border-left-width: 8px;
A
B
C
  <div class="d-g g-16 gtc-1 sm:gtc-3">
    <div class="ai-c blw-1 bc-indigo bs-s d-f d-16 jc-c c-indigo">A</div>
    <div class="ai-c blw-2 bc-indigo bs-s d-f d-16 jc-c c-indigo">B</div>
    <div class="ai-c blw-3 bc-indigo bs-s d-f d-16 jc-c c-indigo">C</div>
  </div>

Core concepts

Learn how to override existing utilities based on the user's screen size or other factors, such as hover states.

Responsive design

You can combine responsive breakpoints like sm:b-[utility], md:b-[utility], lg:b-[utility], and xxl:b-[utility] to allow targeting specific utilities in different viewports.

Hover states

Alternatively, you can apply :hover by using h:b-[utility] utility to override elements and change their values when hovering over them.