CSS Units

CSS color units#

.classA {
/* 3-chars hex */
color: #0f0;
/* 6-chars hex */
color: #00ff00;
/* rgba */
color: rgb(255, 0, 0);
/* rgba */
color: rgba(255, 0, 0, 0.5);
/* transparent */
color: transparent;
/* Basic color keywords */
color: orange;
/* Extended color keywords */
color: darkgray;


hsl(), hsla(), currentColor, nor 8-character hexadecimal color are not supported.

6-chars hex format is the most efficient way. Use it unless you have a special reason.

build-in color names.

CSS length units#

px is the only supported length units.
You can use it like this :

.classA { font-size: 48px; line-height: 64px; }

Other length units in the CSS standard like em, rem, and pt are not supported.

CSS number units#

You can use number on following properties:

CSS percentage (Not support)#

Edit this page on GitHub