Я создал определения SASS mixin, основанные на определениях начальной загрузки для любого числа столбцов (лично помимо 12 я использую 8, 10 и 24):
// Extended bootstrap grid system
//
// Framework grid generation
//
// Based on Bootstrap 'bootstrap/_grid-framework.scss'. Generates classes in form of `.col-(size)-x-num` of width x/num.
@mixin make-extended-grid-columns($num-columns, $i: 1, $list: ".col-xs-#{$i}-#{$num-columns}, .col-sm-#{$i}-#{$num-columns}, .col-md-#{$i}-#{$num-columns}, .col-lg-#{$i}-#{$num-columns}") {
@for $i from (1 + 1) through $num-columns {
$list: "#{$list}, .col-xs-#{$i}-#{$num-columns}, .col-sm-#{$i}-#{$num-columns}, .col-md-#{$i}-#{$num-columns}, .col-lg-#{$i}-#{$num-columns}";
}
#{$list} {
position: relative;
min-height: 1px;
padding-left: ($grid-gutter-width / 2);
padding-right: ($grid-gutter-width / 2);
}
}
@mixin float-extended-grid-columns($class, $num-columns, $i: 1, $list: ".col-#{$class}-#{$i}-#{$num-columns}") {
@for $i from (1 + 1) through $num-columns {
$list: "#{$list}, .col-#{$class}-#{$i}-#{$num-columns}";
}
#{$list} {
float: left;
}
}
@mixin calc-extended-grid-column($index, $num-columns, $class, $type) {
@if ($type == width) and ($index > 0) {
.col-#{$class}-#{$index}-#{$num-columns} {
width: percentage(($index / $num-columns));
}
}
@if ($type == push) and ($index > 0) {
.col-#{$class}-push-#{$index}-#{$num-columns} {
left: percentage(($index / $num-columns));
}
}
@if ($type == pull) and ($index > 0) {
.col-#{$class}-pull-#{$index}-#{$num-columns} {
right: percentage(($index / $num-columns));
}
}
@if ($type == offset) and ($index > 0) {
.col-#{$class}-offset-#{$index}-#{$num-columns} {
margin-left: percentage(($index / $num-columns));
}
}
}
@mixin loop-extended-grid-columns($num-columns, $class, $type) {
@for $i from 1 through $num-columns - 1 {
@include calc-extended-grid-column($i, $num-columns, $class, $type);
}
}
@mixin make-extended-grid($class, $num-columns) {
@include float-extended-grid-columns($class, $num-columns);
@include loop-extended-grid-columns($num-columns, $class, width);
@include loop-extended-grid-columns($num-columns, $class, pull);
@include loop-extended-grid-columns($num-columns, $class, push);
@include loop-extended-grid-columns($num-columns, $class, offset);
}
И вы можете просто создавать классы:
$possible-number-extended-grid-columns: 8, 10, 24;
@each $num-columns in $possible-number-extended-grid-columns {
// Columns
@include make-extended-grid-columns($num-columns);
// Extra small grid
@include make-extended-grid(xs, $num-columns);
// Small grid
@media (min-width: $screen-sm-min) {
@include make-extended-grid(sm, $num-columns);
}
// Medium grid
@media (min-width: $screen-md-min) {
@include make-extended-grid(md, $num-columns);
}
// Large grid
@media (min-width: $screen-lg-min) {
@include make-extended-grid(lg, $num-columns);
}
}
Я надеюсь, что кто-то найдет это полезным