bootstrap 3 row too wide

Why is the row expanding too wide, giving the horizontal scrollbar?

HTML

<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.0/css/bootstrap.min.css">
<div class="container-fluid">
    <div class="row">
        <div class="col-sm-12">
            <input type="text" required="" class="form-control" placeholder="Enter something" id="foo" name="foo">
        </div>
    </div>
</div>

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bootstrap 3 row too wide

Why is the row expanding too wide, giving the horizontal scrollbar?

HTML

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Join the 4+ million users, and keep the JSFiddle dream alive.

Ad-free

Use pre-released features

Fiddle collections

Private collections and fiddles

Console