Make floating divs the same height

Question

I have 2 divs side by side. I don\'t know the height of them upfront, it changed according to the content. Is there a way to make sure they will always be the same height, e

Answer 1

I would recommend reading this article that explains how to do what you are trying to do. I would put a fiddle up that shows, but its pretty extensive and pure css. http://matthewjamestaylor.com/blog/equal-height-columns-cross-browser-css-no-hacks

Answer 2

You could try instead of using float, use display: table-cell. You might find some older browsers don't understand this rule however. See below:

#wrapper {
    display: table; // See FelipeAls comment below
    width: 300px;
}

#left {
    display: table-cell;
    width: 50px;
    background: blue;
}

#right {
    display: table-cell;
    width: 250px;
    background: red;
}

Answer 3

Antony answer works ok, but you need all the divs to have the same parent and to have a wrapper, I have a solution that use javascript but works with any kind of element, they just need to have the same selector.

  function setEqualHeight(selector, triggerContinusly) {

    var elements = $(selector)
    elements.css("height", "auto")
    var max = Number.NEGATIVE_INFINITY;

    $.each(elements, function(index, item) {
        if ($(item).height() > max) {
            max = $(item).height()
        }
    })

    $(selector).css("height", max + "px")

    if (!!triggerContinusly) {
        $(document).on("input", selector, function() {
            setEqualHeight(selector, false)
        })

       $(window).resize(function() {
            setEqualHeight(selector, false)
       })
    }


}

    setEqualHeight(".sameh", true) 

http://jsfiddle.net/83WbS/2/

Answer 4

You can do this without using tables, by using this CSS trick.

Example - http://jsfiddle.net/LMGsv/

HTML

   <div id="wrapper">
            <div id="columns">
                <div id="left">text</div>
                <div id="right">text<br/>another line<br /></div>
            </div>        
    </div>

CSS

#wrapper {
    float:left;
    width: 300px;
}
#columns {
    float:left;
    width:300px;
    background:blue;
}
#left {
    float:left;
    width:50px;
    background: blue;
}
#right {
    width:250px;
    background: red;
    float:left
}

Answer 5

There is a much simpler solution I want to point to. Using large padding-bottom: 500em and negative margin-bottom:-500em of the same amount on columns while the wrapper has simply overflow:hidden to cut the columns to the right size.

Found here: HTML/CSS: Making two floating divs the same height