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in Technique[技术] by (71.8m points)

html - Footer below content, but not floating mid-air if not enough content

I got this code:

DEMO: http://jsfiddle.net/z21nz89d/2/

HTML:

  <nav class="navbar navbar-default" role="navigation">
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="#">Brand</a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">Link</a></li>
        <li><a href="#">Link</a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
          <ul class="dropdown-menu" role="menu">
            <li><a href="#">Action</a></li>
            <li><a href="#">Another action</a></li>
            <li><a href="#">Something else here</a></li>
            <li class="divider"></li>
            <li><a href="#">Separated link</a></li>
            <li class="divider"></li>
            <li><a href="#">One more separated link</a></li>
          </ul>
        </li>
      </ul>
      <form class="navbar-form navbar-left" role="search">
        <div class="form-group">
          <input type="text" class="form-control" placeholder="Search">
        </div>
        <button type="submit" class="btn btn-default">Submit</button>
      </form>
      <ul class="nav navbar-nav navbar-right">
        <li><a href="#">Link</a></li>
        <li class="dropdown">
          <a href="#" class="dropdown-toggle" data-toggle="dropdown">Dropdown <span class="caret"></span></a>
          <ul class="dropdown-menu" role="menu">
            <li><a href="#">Action</a></li>
            <li><a href="#">Another action</a></li>
            <li><a href="#">Something else here</a></li>
            <li class="divider"></li>
            <li><a href="#">Separated link</a></li>
          </ul>
        </li>
      </ul>
   </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>
    <div class="container">
        <p>Here comes some content.</p>
        <p>Here comes some content.</p>
        <p>Here comes some content.</p>
        <p>Here comes some content.</p>
        <p>Here comes some content.</p>
    </div>
    <footer>
        <div class="container">
            <div class="row">
                <div class="col-md-8">
                    <p>Some footer-content</p>
                    <p>Some footer-content</p>
                    <p>Some footer-content</p>
                </div>
                <div class="col-md-4">
                    <p>Some footer-content</p>
                    <p>Some footer-content</p>
                </div>
            </div>
        </div>
    </footer>

CSS:

footer {
    background-color: #eee;
    padding-top: 15px;
    padding-left: 15px;
}

It's kind of the very basic of what I have, but you'll get the point. As you can see the footer is positioned somewhere mid-air. I could position it absolute and make it sticky easily, but for various reasons I do not want that.

I want the footer to be BELOW the whole content (so to speak, listed as very last), however, if there's not enough content I need the footer to be placed at bottom: 0 and left: 0.

I have no idea how to accomplish this. My first guess would've been to use JavaScript to see how much space there is and whether the site is scrollable or not.

See Question&Answers more detail:os

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1 Answer

0 votes
by (71.8m points)

If the height of the footer is unknown, it's best to use flex, something in the lines of:

<body>
    <header></header>
    <div class="content"></div>
    <footer></footer>
</body>

And for CSS only this is needed:

body { 
   display: flex;
   min-height: 100vh;
   flex-direction: column;
}
.content {
   flex: 1;
}

And you don't need to set display:flex to body, it can be a wrapper inside the body too.

Keep in mind this might not work as expected on IE (see CanIUse link below). It works pretty good for most now though!

CanIUse link
See this link for an example.


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