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Bootstrap/scss/mixins/_grid.scss
Mark Otto a8879c8f82 Follow-up to #19099 for grid fixes
- Restores two-mixin approach to generating semantic grid columns (now with 'make-col-ready' and 'make-col')
- Removes need for .col-xs-12 by restoring the mass list of all grid tier classes to set position, min-height, and padding
- Adds an initial 'width: 100%' to flexbox grid column prep (later overridden by the column sizing in 'flex' shorthand or 'width') to prevent flexbox columns from collapsing in lower viewports
2016-07-23 17:12:43 -07:00

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SCSS

/// Grid system
//
// Generate semantic grid columns with these mixins.
@mixin make-container($gutter: $grid-gutter-width) {
margin-left: auto;
margin-right: auto;
padding-left: ($gutter / 2);
padding-right: ($gutter / 2);
@if not $enable-flex {
@include clearfix();
}
}
// For each breakpoint, define the maximum width of the container in a media query
@mixin make-container-max-widths($max-widths: $container-max-widths, $breakpoints: $grid-breakpoints) {
@each $breakpoint, $container-max-width in $max-widths {
@include media-breakpoint-up($breakpoint, $breakpoints) {
max-width: $container-max-width;
}
}
}
@mixin make-row($gutter: $grid-gutter-width) {
@if $enable-flex {
display: flex;
flex-wrap: wrap;
} @else {
@include clearfix();
}
margin-left: ($gutter / -2);
margin-right: ($gutter / -2);
}
@mixin make-col-ready($size, $columns: $grid-columns, $gutter: $grid-gutter-width) {
position: relative;
min-height: 1px; // Prevent collapsing
padding-right: ($gutter / 2);
padding-left: ($gutter / 2);
// Prevent columns from becoming too narrow when at smaller grid tiers by
// always setting `width: 100%;`. This works because we use `flex` values
// later on to override this initial width.
@if $enable-flex {
width: 100%;
}
}
@mixin make-col($size, $columns: $grid-columns, $gutter: $grid-gutter-width) {
@if $enable-flex {
flex: 0 0 percentage($size / $columns);
// Add a `max-width` to ensure content within each column does not blow out
// the width of the column. Applies to IE10+ and Firefox. Chrome and Safari
// do not appear to require this.
max-width: percentage($size / $columns);
} @else {
float: left;
width: percentage($size / $columns);
}
}
@mixin make-col-offset($size, $columns: $grid-columns) {
margin-left: percentage($size / $columns);
}
@mixin make-col-push($size, $columns: $grid-columns) {
left: if($size > 0, percentage($size / $columns), auto);
}
@mixin make-col-pull($size, $columns: $grid-columns) {
right: if($size > 0, percentage($size / $columns), auto);
}
@mixin make-col-modifier($type, $size, $columns) {
// Work around the lack of dynamic mixin @include support (https://github.com/sass/sass/issues/626)
@if $type == push {
@include make-col-push($size, $columns);
} @else if $type == pull {
@include make-col-pull($size, $columns);
} @else if $type == offset {
@include make-col-offset($size, $columns);
}
}