在动态高度div中垂直对齐文本

Question

I want to vertically align text inside a div which is dynamic height say 10% of page for example, but without using the well-known "table method". Can this be achieved with pure CSS?

Piece of code:

HTML:

<div class="post-details-wrapper">
    <div class="post-details-h">
        Post Details
    </div>
</div>

CSS:

post-details-h {
background-color: green;
height:5%;
width:100%;
}

In this particular case the goal is to vertically align the text of "post-details-h" div.

Answer 1

use display: flex + align-items: center

 *{ padding: 0; margin: 0; } .post-details-h{ background-color: green; height: 100px; width: 100%; display: flex; align-items: center; } 

 <div class="post-details-wrapper"> <div class="post-details-h"> <span>Post Details</span> </div> </div> 

Answer 2

The usual approach is to use display:table stuff. But if you don't want to use it, you can try something like this:

<div class="post-details-wrapper">
    <div class="post-details-h">
        <span>Post Details</span>
    </div>
</div>

.post-details-wrapper {
    height:350px;
    background:red;
}
.post-details-h {
    background-color: green;
    height:10%;
    width:100%;
}
.post-details-h:before {
    content: '';
    display: inline-block;
    height: 100%; 
    vertical-align: middle;
}
.post-details-h span {
    display: inline-block;
    vertical-align: middle;
}

Just add span so you can center taht element inside .post-details-h.

You can check in JSFiddle

Hope this helps.

Answer 3

Check out this fiddle . The way that I know how to do it does involve two classes, like how you did it.

.post-details-h {
    line-height: 200px;
    width:100%;
    vertical-align: center;
}

.post-details-wrapper {
    background-color: red;
    height: 200px;
    position: relative;
}