How to center text vertically in HTML using CSS only

问题

I have a very simple HTML. Due to some limitations, I cannot modify the HTML content. I want to center the text vertically only using CSS.

<html>
    <head>...</head>

    <body>
        <div>Oops, the webpage is currently not available.</div>
    </body>
</html>

Note that the size of the HTML can be variable.

In addition, if the text cannot be displayed in one line, it should be broken into multiple lines.

Is it possible?

回答1:

I think vertical-align only works for content which is in a table. For your simple page you could put the content in a table instead of a div to avoid this problem.

There are some workarounds, see http://phrogz.net/css/vertical-align/index.html

回答2:

Another possible solution:

<html>
    <head>
        <title>Title</title>
        <style>
            body {height:100%}
        </style>
    </head>

    <body>
        <div style="height:100%;">
            <div style="position:relative;top:50%;text-align:center">Oops, the webpage is currently not available.</div>
        </div>
    </body>
</html>

回答3:

<html>
    <head>...
       <style type="text/css">
           div{
               width: 300px;
               height: 300px;
               border: solid blue;
               display: table-cell;
               vertical-align: middle;
           }
       </style>
    </head>

    <body>
        <div>This works fine!</div>
    </body>
</html>

回答4:

<html>
    <head>
        <style type="text/css">
            .vertical {
                margin: 0;
                background: yellow;
                position: absolute;
                top: 50%;
                left: 50%;
                margin-right: -50%;
                transform: translate(-50%, -50%) 
            }
        </style>
    </head>
    <body>
        <div class="vertical">
         Centered
        </div>
    </body>
</html>

回答5:

Try this:

.text-tag{

    text-align: center;
    margin-top: 25%;
}

And apply "text-tag" to the text you want to center.

来源：https://stackoverflow.com/questions/2943234/how-to-center-text-vertically-in-html-using-css-only

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html

css

text

center