Middle div with 100% in CSS? [duplicate]

2019-05-25 04:47发布

站内问答 / HTML/CSS
1384 3 4

Possible Duplicate:
CSS - percentage height

I can't get the middle div of 3 divs to fit 100% of available space.

<body>
<div id="container">
    <div id="header">
    </div>
    <div id="content">
    </div>
    <div id="footer">
    </div>
</div>
</body>

My CSS is:

html, body {
    margin: 0;
    padding: 0;
    border:1px;
    vertical-align:top;
    font-family:"Trebuchet MS", Arial, Helvetica, sans-serif;
    font-size:14px;
    color:#333;
    height: 100%;
}
#container {
    height: 100%;
    width: 100%;
}
#header {
    height: 100px;
    width: 100%;
    background: #069;
}
#content {
    height: 100%;
    width: 100%;
    background: #F60;
}
#footer {
    height: 75px;
    width: 100%;
    background: #060;
}

Center div is in effect being 100%, but its not fitting available space.

It is doing something like this: If the screen is 500px

30px
100% (500px)
30px

What I need is:

30px
100% (460px)
30px

Is this possible withouth using javascript?

Thanks a lot

EDIT:
Sorry I meant Height I have 3 elements, header, middle and footer. Header and footer have fixed height, but I want middle to fit all available space

Found another solution based on other stackoverflow question:

* { margin: 0; padding: 0 }
html, body {
    margin: 0;
    padding: 0;
    vertical-align:top;
    font-family:"Trebuchet MS", Arial, Helvetica, sans-serif;
    font-size:14px;
    color:#333;
    height: 100%;
    border: 0;
}
#header
{
    height: 100px;
    background:#C60;
}

#container
{
    min-height: 100%; 
    height: auto !important; /*Cause footer to stick to bottom in IE 6*/
    height: 100%; 
    margin: 0 auto -100px; /*Allow for footer height*/
    vertical-align:bottom;
    background:#096;
}

#footer
{
    height: 100px; /*Push must be same height as Footer */
    background:#C60;
}

HTML

<body>
<div id="container">
<div id="header"> </div>
<div id="content"> </div>
</div>
<div id="footer"> </div>
</body>

3条回答
对你真心纯属浪费
2楼-- · 2019-05-25 05:38

You could position the div absolutely:

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

and

#header {
    position:absolute;
    top:0px;
    left:0px;
    right:0px;
    height: 100px;
    background: #069;
}
#content {
    position:absolute;
    top: 100px;
    bottom: 75px;
    left:0px;
    right:0px;
    background: #F60;
}
#footer {
    position:absolute;
    bottom: 0px;
    height: 75px;
    left:0px;
    right:0px;
    width: 100%;
    background: #060;
}
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迷人小祖宗
3楼-- · 2019-05-25 05:41

I think that a good idea would be to fiddle with 'display:flexbox' to achieve that kind of responsiveness. Here is a good article about it.

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太酷不给撩
4楼-- · 2019-05-25 05:47

Try something like this jsfiddle.

html

<body>
    <div id="wrap">
<div id="container">
    <div id="header">header
    </div>
    <div id="content">qweW
    </div>
</div>
</div>
    <div id="footer">footer
    </div>
</body>

css

* { margin: 0; padding: 0 }
html, body {
    margin: 0;
    padding: 0;
    border:1px;
    vertical-align:top;
    font-family:"Trebuchet MS", Arial, Helvetica, sans-serif;
    font-size:14px;
    color:#333;
    height: 100%;
    background: #F60;
}
#container {
    width: 100%;
    padding-bottom: 75px;
}
#wrap {min-height: 100%;}
#header {
    height: 100px;
    width: 100%;
    background: #069;
}
#content {
    height: 100%;
    width: 100%;
}
#footer {
    position: relative;
    margin-top: -75px;
    clear:both;
    height: 75px;
    width: 100%;
    background: green;
}

I tweaked your HTML to add a "wrapper" around the "container" div, and move the "footer" out of both.

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