<p dir="auto">.container {<br>
padding-right: 15px;<br>
padding-left: 15px;<br>
margin-right: auto;<br>
margin-left: auto;<br>
}</p>
<p dir="auto">.container:before,      <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="1445875" data-permission-text="Title is private" data-url="https://github.com/twbs/bootstrap/issues/1" data-hovercard-type="pull_request" data-hovercard-url="/twbs/bootstrap/pull/1/hovercard" href="https://github.com/twbs/bootstrap/pull/1">#1</a><br>
.container:after {<br>
display: table;<br>
content: " ";<br>
}</p>
<p dir="auto">.container:after {         <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="1446398" data-permission-text="Title is private" data-url="https://github.com/twbs/bootstrap/issues/2" data-hovercard-type="issue" data-hovercard-url="/twbs/bootstrap/issues/2/hovercard" href="https://github.com/twbs/bootstrap/issues/2">#2</a><br>
clear: both;<br>
}</p>
<p dir="auto">.container:before,        DUPLICATE OF <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="1445875" data-permission-text="Title is private" data-url="https://github.com/twbs/bootstrap/issues/1" data-hovercard-type="pull_request" data-hovercard-url="/twbs/bootstrap/pull/1/hovercard" href="https://github.com/twbs/bootstrap/pull/1">#1</a><br>
.container:after {<br>
display: table;<br>
content: " ";<br>
}</p>
<p dir="auto">.container:after {          DUPLICATE OF <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="1446398" data-permission-text="Title is private" data-url="https://github.com/twbs/bootstrap/issues/2" data-hovercard-type="issue" data-hovercard-url="/twbs/bootstrap/issues/2/hovercard" href="https://github.com/twbs/bootstrap/issues/2">#2</a><br>
clear: both;<br>
}</p>
<p dir="auto">.row {<br>
margin-right: -15px;<br>
margin-left: -15px;<br>
}</p>
<p dir="auto">.row:before,                 <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="1446658" data-permission-text="Title is private" data-url="https://github.com/twbs/bootstrap/issues/3" data-hovercard-type="pull_request" data-hovercard-url="/twbs/bootstrap/pull/3/hovercard" href="https://github.com/twbs/bootstrap/pull/3">#3</a><br>
.row:after {<br>
display: table;<br>
content: " ";<br>
}</p>
<p dir="auto">.row:after {                  <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="1446676" data-permission-text="Title is private" data-url="https://github.com/twbs/bootstrap/issues/4" data-hovercard-type="issue" data-hovercard-url="/twbs/bootstrap/issues/4/hovercard" href="https://github.com/twbs/bootstrap/issues/4">#4</a><br>
clear: both;<br>
}</p>
<p dir="auto">.row:before,                DUPLICATE OF <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="1446658" data-permission-text="Title is private" data-url="https://github.com/twbs/bootstrap/issues/3" data-hovercard-type="pull_request" data-hovercard-url="/twbs/bootstrap/pull/3/hovercard" href="https://github.com/twbs/bootstrap/pull/3">#3</a><br>
.row:after {<br>
display: table;<br>
content: " ";<br>
}</p>
<p dir="auto">.row:after {                 DUPLICATE OF <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="1446676" data-permission-text="Title is private" data-url="https://github.com/twbs/bootstrap/issues/4" data-hovercard-type="issue" data-hovercard-url="/twbs/bootstrap/issues/4/hovercard" href="https://github.com/twbs/bootstrap/issues/4">#4</a><br>
clear: both;<br>
}</p>
<p dir="auto">show on bootstrap.css</p>
<p dir="auto"><a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L581">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L581</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L723">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L723</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L743">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L743</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L2023">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L2023</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L2433">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L2433</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L2617">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L2617</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L2637">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L2637</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L3032">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L3032</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L3296">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L3296</a><br>
<a href="https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L3453">https://github.com/twbs/bootstrap/blob/3.0.0-wip/dist/css/bootstrap.css#L3453</a></p>