A true sticky footer with a fixed header?

问题:

First of all, please read this whole question so you can fully understand what i am looking for, Thanks!

This is a question i have been trying to research for a great time now, and has stumped me for quit a while. Can i have a true sticky footer with a fixed header?

How can i implement a sticky footer with a fixed header? I can't add padding or a margin to the body or content, since that will break the footer. Also, i want to be able to use width:100% and height: 100% inside my content without it overflowing and creating a mess.

Here is what i am aiming for (Please excuse my great Photoshop skills) :

This look good, when i use position:fixed; and bottom:0; on my footer. But to make it truly sticky, i need to add some css to my page. (from : http://css-tricks.com/snippets/css/sticky-footer/)

* {
  margin: 0;
}
html, body {
  height: 100%;
}
.page-wrap {
  min-height: 100%;
  /* equal to footer height */
  margin-bottom: -142px; 
}
.page-wrap:after {
  content: "";
  display: block;
}
.site-footer, .page-wrap:after {
  /* .push must be the same height as footer */
  height: 142px; 
}
.site-footer {
  background: orange;
}

This allows me to have a GREAT looking sticky footer, but here is the problem. Some of the content is underneath my fixed navigation bar.

I can't add padding or a margin to the body, html, OR the content, because that will make the sticky footer mess up. Is there any way i can do this without CSS "Hacks"?

This is with the content under the header: http://jsfiddle.net/g2ydV/3/

Looks good right!, but some of the content is hidden under the header? Lets fix that by adding a margin to the content: http://jsfiddle.net/g2ydV/2/

The above example works, BUT the footer is messed up. How can i achieve this effect without messing up my sticky footer?

回答1:

One potential solution is to swap your content:after to content:before.

Working Demo

CSS:

/* .content:after {
     content: "";
     display: block;
} */

.content:before {
 content: "";
 display: block;
 height: 45px;
}

回答2:

There's an alternative way of doing this using display: table; and display: table-cell which seems to be becoming increasingly popular.

I'm just offering it up as an alternative worth having a look at. It's quite clean and doesn't require any defined heights for the header and footer which is nice.

HTML

<div id="wrap">
  <div id="wrap-inner">

    <div class="navbar">
      <span>Fixed Header (content under here)</span>
    </div>

    <div class="content">
      <p>Content Here ... part of this is under the header, i need to see all of it without messing up the sticky footer</p>
    </div>

    <div class="footer">
      <span>Sticky footer!</span>
    </div>

  </div>
</div>

CSS

html, body {
  height: 100%;
}

body {
  margin: 0;
}

#wrap {
  display: table;
  width: 100%;
  height: 100%;
  min-height: 100%;
}

#wrap-inner {
  vertical-align: middle; /* optional for positioning content in the middle */
  display: table-cell;
}

.navbar, .footer {
  position: fixed;
  width: 100%;
}

.navbar {
  top: 0;
  width: 100%;
}

.footer {
  bottom: 0;
}

Demo

回答3:

it's my decision for fixed header

html {
    position: relative;
    min-height: 100%;
}

#main-container {
    padding-top: 55px; /*  this is header height  */
}

footer {
    position: absolute;
    bottom: 0;
    width: 100%;
}