Left, center, and right align divs on bottom of sa

问题:

I have three divs that I would like to display on the same line. Each of the three has different widths and heights, and they are not straight text. I'd like to left-align one (all the way to the left), right-align another (all the way to the right), and center the third (in the middle of the containing div, the whole page in this case).

In addition, I'd like the three divs to be vertically aligned to the bottom of the containing div. The solution I have vertically aligns them to the top of the containing div.

What is the best way to handle this?

回答1:

By setting your container div to position:relative and the child divs to position:absolute you can absolute position the divs within the confines of the container.

This makes it easy, as you can use bottom:0px to align all vertically to the bottom of the container, and then use left/right styling to position along the horizontal axis.

I set up a working jsFiddle: http://jsfiddle.net/Damien_at_SF/KM7sQ/5/ and the code follows:

HTML:

<div id="container">
    <div id="left">left</div>
    <div id="center">center</div>
    <div id="right">right</div>    
</div>

CSS:

#container {
    position:relative;
    height:400px;
    width:100%;
    border:thick solid black;
}
#container div {
    background:grey;
    width:200px;
}
#left {
    position:absolute;
    left:0px;
    bottom:0px;
}
#center {
    position:absolute;
    left:50%;
    margin-left:-100px;
    bottom:0px;
}
#right {
    position:absolute;
    right:0px;
    bottom:0px;
}

Note: For the "center" div, the margin-left = 1/2 the width of the div :)

Hope that helps :)

回答2:

My technique is similar to @Damien-at-SF:

I tried to rigorously demonstrate all the requirements you asked for.

Live Demo

HTML:

<div id="container">

    <div id="left"></div>
    <div id="mid"></div>
    <div id="right"></div>

</div>

CSS:

#container {
    position: relative;
    height: 400px;
    width: 80%;
    min-width: 400px;
    margin: 0 auto;

    background: #ccc
}
#left, #right, #mid {
    position: absolute;
    bottom: 0;
}
#left {
    left: 0;
    width: 80px;
    height: 200px;

    background: red
}
#right {
    right: 0;
    width: 120px;
    height: 170px;

    background: blue
}

#mid {
    left:50%;

    margin-left: -80px;
    width: 160px;
    height: 300px;

    background: #f39
}

回答3:

To make your center div elastic, you could do something like:

<div style="display:table; width:500px;">
  <div style="display:table-row;">
    <div style="display:table-cell; width:50px;"></div>
    <div style="display:table-cell;"></div>
    <div style="display:table-cell; width:50px;"></div>
  </div>
</div>

回答4:

A further enhancement to the first answer:

In the "center" div CSS, you need to add:

text-align:center;

In the "right" div CSS, you need to add:

text-align:right;

... to perfectly achieve left/center/right aligning.

回答5:

Set position: relative on the containing div, set position: relative on your 3 divs, and set the bottom attribute of the 3 divs to 0:

bottom: 0