Can I use ?Can I use ?
border:size|style|color / b:size|style|colorborder: size style color
border-top:size|style|color / bt:size|style|colorborder-top: size style color
border-bottom:size|style|color / bb:size|style|colorborder-bottom: size style color
border-left:size|style|color / bl:size|style|colorborder-left: size style color
border-right:size|style|color / br:size|style|colorborder-right: size style color
bx:size|style|colorborder-left: size style color; border-right: size style color
by:size|style|colorborder-top: size style color; border-bottom: size style color

The border property may be specified using two or three of the values ( style, size, color ). The order of the values does not matter.


The border CSS property sets an element’s border.

It is a shorthand for:

<div class="">
Virtual CSS
<div class="w:full align-items:center t:center">
    <code class="b:2|solid|blue-40 ...">Virtual CSS</code>

Basic usage

All sides

<div class="">
Virtual CSS

Single side

Using bt, bb, bl, br to set the border of single side.


Both sides

Using bx, by to set the border of vertical or horizontal side.

bx:10 by:1
bx:1 by:10

Applying with functions

<div class="border:$(style)">...</div>

Master supports native CSS variables and functions, just add var(--key) or use shorthand$(key) for variables.

You can also use calc(expression), env(expression) and other CSS functions if the property supports it.

To learn more, see the Functions documentation.

Conditionally apply

States and selectors

<div class="border:1|solid|blue-60:hover">...</div>

Master supports all native CSS selectors, just add :hover, :disabled, chaining, combinators and other CSS selectors as usual.

To learn more, see the Selectors documentation.

Responsive breakpoints

<div class="border:1|solid|blue-60@sm">...</div>

Responsive breakpoints can be applied to all styles. Some available breakpoints are 3xs, 2xs, xs, sm,md, lg, xl, 2xl, 3xl, 4xl. Arbitrary breakpoints can be specified through comparison operators >, >=, <, <=.

To learn more, see the Breakpoints documentation.

<div class="border:1|solid|blue-60@print">...</div>

Master supports media types like print, screen, speech, all, and other media queries.

To learn more, see the Media Queries documentation.

Dark mode and color schemes

<div class="border:1|solid|blue-60@dark">...</div>

Master uses the selector html.dark to support color schemes. Now, you can easily fine-tune your style for the color schemes.

To learn more, see the Color Schemes documentation.

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Edited byAronLola