自举3偏移在右边不是左边

关于 BS 3,如果我只想要右边一列狭窄的内容,我可能会使用一个偏移类9和一个列3。

然而,如果我想要的是相反的和在左边的呢?在 BS 中有没有合适的方法来做这件事,或者我应该只使用我自己的 CSS 方法?我在考虑用我的内容创建一个3列,只有一个空的9列。

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Bootstrap rows always contain their floats and create new lines. You don't need to worry about filling blank columns, just make sure they don't add up to more than 12.

<link rel="stylesheet" href="//maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">


<div class="container">
<div class="row">
<div class="col-xs-3 col-xs-offset-9">
I'm a right column of 3
</div>
</div>
<div class="row">
<div class="col-xs-3">
I'm a left column of 3
</div>
</div>
<div class="panel panel-default">
<div class="panel-body">
And I'm some content below both columns
</div>
</div>
</div>

I'm using the following simple custom CSS I wrote to achieve this.

.col-xs-offset-right-12 {
margin-right: 100%;
}
.col-xs-offset-right-11 {
margin-right: 91.66666667%;
}
.col-xs-offset-right-10 {
margin-right: 83.33333333%;
}
.col-xs-offset-right-9 {
margin-right: 75%;
}
.col-xs-offset-right-8 {
margin-right: 66.66666667%;
}
.col-xs-offset-right-7 {
margin-right: 58.33333333%;
}
.col-xs-offset-right-6 {
margin-right: 50%;
}
.col-xs-offset-right-5 {
margin-right: 41.66666667%;
}
.col-xs-offset-right-4 {
margin-right: 33.33333333%;
}
.col-xs-offset-right-3 {
margin-right: 25%;
}
.col-xs-offset-right-2 {
margin-right: 16.66666667%;
}
.col-xs-offset-right-1 {
margin-right: 8.33333333%;
}
.col-xs-offset-right-0 {
margin-right: 0;
}
@media (min-width: 768px) {
.col-sm-offset-right-12 {
margin-right: 100%;
}
.col-sm-offset-right-11 {
margin-right: 91.66666667%;
}
.col-sm-offset-right-10 {
margin-right: 83.33333333%;
}
.col-sm-offset-right-9 {
margin-right: 75%;
}
.col-sm-offset-right-8 {
margin-right: 66.66666667%;
}
.col-sm-offset-right-7 {
margin-right: 58.33333333%;
}
.col-sm-offset-right-6 {
margin-right: 50%;
}
.col-sm-offset-right-5 {
margin-right: 41.66666667%;
}
.col-sm-offset-right-4 {
margin-right: 33.33333333%;
}
.col-sm-offset-right-3 {
margin-right: 25%;
}
.col-sm-offset-right-2 {
margin-right: 16.66666667%;
}
.col-sm-offset-right-1 {
margin-right: 8.33333333%;
}
.col-sm-offset-right-0 {
margin-right: 0;
}
}
@media (min-width: 992px) {
.col-md-offset-right-12 {
margin-right: 100%;
}
.col-md-offset-right-11 {
margin-right: 91.66666667%;
}
.col-md-offset-right-10 {
margin-right: 83.33333333%;
}
.col-md-offset-right-9 {
margin-right: 75%;
}
.col-md-offset-right-8 {
margin-right: 66.66666667%;
}
.col-md-offset-right-7 {
margin-right: 58.33333333%;
}
.col-md-offset-right-6 {
margin-right: 50%;
}
.col-md-offset-right-5 {
margin-right: 41.66666667%;
}
.col-md-offset-right-4 {
margin-right: 33.33333333%;
}
.col-md-offset-right-3 {
margin-right: 25%;
}
.col-md-offset-right-2 {
margin-right: 16.66666667%;
}
.col-md-offset-right-1 {
margin-right: 8.33333333%;
}
.col-md-offset-right-0 {
margin-right: 0;
}
}
@media (min-width: 1200px) {
.col-lg-offset-right-12 {
margin-right: 100%;
}
.col-lg-offset-right-11 {
margin-right: 91.66666667%;
}
.col-lg-offset-right-10 {
margin-right: 83.33333333%;
}
.col-lg-offset-right-9 {
margin-right: 75%;
}
.col-lg-offset-right-8 {
margin-right: 66.66666667%;
}
.col-lg-offset-right-7 {
margin-right: 58.33333333%;
}
.col-lg-offset-right-6 {
margin-right: 50%;
}
.col-lg-offset-right-5 {
margin-right: 41.66666667%;
}
.col-lg-offset-right-4 {
margin-right: 33.33333333%;
}
.col-lg-offset-right-3 {
margin-right: 25%;
}
.col-lg-offset-right-2 {
margin-right: 16.66666667%;
}
.col-lg-offset-right-1 {
margin-right: 8.33333333%;
}
.col-lg-offset-right-0 {
margin-right: 0;
}
}

<div class="row">
<div class="col-md-10 col-md-pull-2">
col-md-10 col-md-pull-2
</div>
<div class="col-md-10 col-md-pull-2">
col-md-10 col-md-pull-2
</div>
</div>

I modified Bootstrap SASS (v3.3.5) based on Rukshan's answer

Add this in the end of the calc-grid-column mixin in mixins/_grid-framework.scss, right below the $type == offset if condition.

@if ($type == offset-right) {
.col-#{$class}-offset-right-#{$index} {
margin-right: percentage(($index / $grid-columns));
}
}

Modify the make-grid mixin in mixins/_grid-framework.scss to generate the offset-right classes.

// Create grid for specific class
@mixin make-grid($class) {
@include float-grid-columns($class);
@include loop-grid-columns($grid-columns, $class, width);
@include loop-grid-columns($grid-columns, $class, pull);
@include loop-grid-columns($grid-columns, $class, push);
@include loop-grid-columns($grid-columns, $class, offset);
@include loop-grid-columns($grid-columns, $class, offset-right);
}

You can then use the classes like col-sm-offset-right-2 and col-md-offset-right-1

Based on WeNeigh's answer! here is a LESS example

.col-offset-right(@i, @type) when (@i >= 0) {
.col-@{type}-offset-right-@{i} {
margin-right: percentage((@i / @grid-columns));
}
.col-offset-right(@i - 1, @type);
};
.col-offset-right(@grid-columns, xs);
.col-offset-right(@grid-columns, sm);
.col-offset-right(@grid-columns, md);
.col-offset-right(@grid-columns, lg);

Here is the same solution than Rukshan but in sass (in order to keep your grid configuration) for special case that don't work with Ross Allen solution (when you can't have a parent div.row)

@mixin make-grid-offset-right($class) {
@for $index from 0 through $grid-columns {
.col-#{$class}-offset-right-#{$index} {
margin-right: percentage(($index / $grid-columns));
}
}
}


@include make-grid-offset-right(xs);


@media (min-width: $screen-sm-min) {
@include make-grid-offset-right(sm);
}


@media (min-width: $screen-md-min) {
@include make-grid-offset-right(md);
}


@media (min-width: $screen-lg-min) {
@include make-grid-offset-right(lg);
}

<div class="row col-xs-12">
<nav class="col-xs-12 col-xs-offset-7" aria-label="Page navigation">
<ul class="pagination mt-0">
<li class="page-item">
<div class="form-group">
<div class="input-group">
<input type="text" asp-for="search" class="form-control" placeholder="Search" aria-controls="order-listing" />


<div class="input-group-prepend bg-info">
<input type="submit" value="Search" class="input-group-text bg-transparent">
</div>
</div>
</div>
</li>
                   

</ul>
</nav>
</div>

Since Google seems to like this answer...

If you're looking to match Bootstrap 4's naming convention, i.e. offset-*-#, here's that modification:

.offset-right-12 {
margin-right: 100%;
}
.offset-right-11 {
margin-right: 91.66666667%;
}
.offset-right-10 {
margin-right: 83.33333333%;
}
.offset-right-9 {
margin-right: 75%;
}
.offset-right-8 {
margin-right: 66.66666667%;
}
.offset-right-7 {
margin-right: 58.33333333%;
}
.offset-right-6 {
margin-right: 50%;
}
.offset-right-5 {
margin-right: 41.66666667%;
}
.offset-right-4 {
margin-right: 33.33333333%;
}
.offset-right-3 {
margin-right: 25%;
}
.offset-right-2 {
margin-right: 16.66666667%;
}
.offset-right-1 {
margin-right: 8.33333333%;
}
.offset-right-0 {
margin-right: 0;
}
@media (min-width: 576px) {
.offset-sm-right-12 {
margin-right: 100%;
}
.offset-sm-right-11 {
margin-right: 91.66666667%;
}
.offset-sm-right-10 {
margin-right: 83.33333333%;
}
.offset-sm-right-9 {
margin-right: 75%;
}
.offset-sm-right-8 {
margin-right: 66.66666667%;
}
.offset-sm-right-7 {
margin-right: 58.33333333%;
}
.offset-sm-right-6 {
margin-right: 50%;
}
.offset-sm-right-5 {
margin-right: 41.66666667%;
}
.offset-sm-right-4 {
margin-right: 33.33333333%;
}
.offset-sm-right-3 {
margin-right: 25%;
}
.offset-sm-right-2 {
margin-right: 16.66666667%;
}
.offset-sm-right-1 {
margin-right: 8.33333333%;
}
.offset-sm-right-0 {
margin-right: 0;
}
}
@media (min-width: 768px) {
.offset-md-right-12 {
margin-right: 100%;
}
.offset-md-right-11 {
margin-right: 91.66666667%;
}
.offset-md-right-10 {
margin-right: 83.33333333%;
}
.offset-md-right-9 {
margin-right: 75%;
}
.offset-md-right-8 {
margin-right: 66.66666667%;
}
.offset-md-right-7 {
margin-right: 58.33333333%;
}
.offset-md-right-6 {
margin-right: 50%;
}
.offset-md-right-5 {
margin-right: 41.66666667%;
}
.offset-md-right-4 {
margin-right: 33.33333333%;
}
.offset-md-right-3 {
margin-right: 25%;
}
.offset-md-right-2 {
margin-right: 16.66666667%;
}
.offset-md-right-1 {
margin-right: 8.33333333%;
}
.offset-md-right-0 {
margin-right: 0;
}
}
@media (min-width: 992px) {
.offset-lg-right-12 {
margin-right: 100%;
}
.offset-lg-right-11 {
margin-right: 91.66666667%;
}
.offset-lg-right-10 {
margin-right: 83.33333333%;
}
.offset-lg-right-9 {
margin-right: 75%;
}
.offset-lg-right-8 {
margin-right: 66.66666667%;
}
.offset-lg-right-7 {
margin-right: 58.33333333%;
}
.offset-lg-right-6 {
margin-right: 50%;
}
.offset-lg-right-5 {
margin-right: 41.66666667%;
}
.offset-lg-right-4 {
margin-right: 33.33333333%;
}
.offset-lg-right-3 {
margin-right: 25%;
}
.offset-lg-right-2 {
margin-right: 16.66666667%;
}
.offset-lg-right-1 {
margin-right: 8.33333333%;
}
.offset-lg-right-0 {
margin-right: 0;
}
}
@media (min-width: 1200px) {
.offset-xl-right-12 {
margin-right: 100%;
}
.offset-xl-right-11 {
margin-right: 91.66666667%;
}
.offset-xl-right-10 {
margin-right: 83.33333333%;
}
.offset-xl-right-9 {
margin-right: 75%;
}
.offset-xl-right-8 {
margin-right: 66.66666667%;
}
.offset-xl-right-7 {
margin-right: 58.33333333%;
}
.offset-xl-right-6 {
margin-right: 50%;
}
.offset-xl-right-5 {
margin-right: 41.66666667%;
}
.offset-xl-right-4 {
margin-right: 33.33333333%;
}
.offset-xl-right-3 {
margin-right: 25%;
}
.offset-xl-right-2 {
margin-right: 16.66666667%;
}
.offset-xl-right-1 {
margin-right: 8.33333333%;
}
.offset-xl-right-0 {
margin-right: 0;
}
}

You need to combine multiple classes (col-*-offset-* for left-margin and col-*-pull-* to pull it right)

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<div class="container">
<div class="row">
<div class="col-xs-3 col-xs-offset-9">
I'm a right column
</div>
<div class="col-xs-3">
We're
</div>
<div class="col-xs-3">
four columns
</div>
<div class="col-xs-3">
using the
</div>
<div class="col-xs-3">
whole row
</div>
<div class="col-xs-3 col-xs-offset-9 col-xs-pull-9">
I'm a left column
</div>
<div class="col-xs-3">
We're
</div>
<div class="col-xs-3">
four columns
</div>
<div class="col-xs-3">
using the
</div>
<div class="col-xs-3">
whole row
</div>
</div>
</div>

So you don't need to separate it manually into different rows.

Bootstrap 5 SASS solution:

@mixin make-col-offset-end($size, $columns: $grid-columns) {
$num: divide($size, $columns);
margin-right: if($num == 0, 0, percentage($num));
}


@mixin make-grid-offset-end($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints) {
@each $breakpoint in map-keys($breakpoints) {
$infix: breakpoint-infix($breakpoint, $breakpoints);


@include media-breakpoint-up($breakpoint, $breakpoints) {
@if $columns > 0 {
// `$columns - 1` because offsetting by the width of an entire row isn't possible
@for $i from 0 through ($columns - 1) {
@if not ($infix == "" and $i == 0) { // Avoid emitting useless .offset-0
.offset-end#{$infix}-#{$i} {
@include make-col-offset-end($i, $columns);
}
}
}
}
}
}
}


@include make-grid-offset-end();

This will give you all of the classes offset already has, but with offset-end (e.g. offset-end-md-2)