sass-site/source/documentation/at-rules/control/for.md

title

introduction

@for

The `@for` rule, written `@for <variable> from <expression> to <expression> { ... }` or `@for <variable> from <expression> through <expression> { ... }`, counts up or down from one number (the result of the first [expression](/documentation/syntax/structure#expressions)) to another (the result of the second) and evaluates a block for each number in between. Each number along the way is assigned to the given variable name. If `to` is used, the final number is excluded; if `through` is used, it's included.

{% codeExample 'for' %} $base-color: #036;

@for $i from 1 through 3 { ul:nth-child(3n + #{$i}) { background-color: lighten($base-color, $i * 5%); } }

$base-color: #036

@for $i from 1 through 3 ul:nth-child(3n + #{$i}) background-color: lighten($base-color, $i * 5%) {% endcodeExample %}