jessica jessica - 2 months ago 8
CSS Question

Vertically center a div inside another div

I'm trying to

vertical-align: middle
a div inside another div, but for some reason it's not working properly. What am I doing wrong?



#wrapper {
border: 1px solid red;
width: 500px;
height: 500px;
}
#block {
border: 1px solid blue;
width: 500px;
height: 250px;
vertical-align: middle;
}

<div id = 'wrapper'>
<div id = 'block'> I'm Block </div>
<div>





PS: This is just an example, so no, I don't actually know the actual width and height of the divs, as they are dynamic, according to their contents, so please no margin-top: 125px, or padding-top: 125px answers, or answers like that.

Answer

The vertical-align property applies only to inline-level and table-cell elements (source). In your code you're working with block-level elements.

Try this flexbox alternative:

#wrapper {
    border: 1px solid red;
    width: 500px;
    height: 500px;
    display: flex;               /* establish flex container */
    align-items: center;         /* vertically center flex items */
}

#block {
    border: 1px solid blue;
    width: 500px;
    height: 250px;
    /* vertical-align: middle; */
}
<div id='wrapper'>
    <div id='block'> I'm Block </div>
<div>

Learn more about flex alignment here: Methods for Aligning Flex Items

Browser support: Flexbox is supported by all major browsers, except IE < 10. Some recent browser versions, such as Safari 8 and IE10, require vendor prefixes. For a quick way to add prefixes use Autoprefixer. More details in this answer.