How do I make a div centered
The main style definitions are as follows:
body {text-align:center;}
#center {Margin-right:auto; Margin-left:auto; }
Description
First, the parent element defines text-align:center, which means that the content within the parent element is centered, and for IE this setting is OK. But you can't center in Mozilla. The solution is to add "Margin-right:auto" when the child element definition is set; Margin-left:auto; ”
What needs to be explained is that if you want to use this method to make the entire page centered, it is recommended not to be nested in a div, you can split out a number of Div, as long as in each split div defined margin-right:auto; Margin-left:auto; It's OK.
How do I get a picture centered vertically in a div
Use the background method. Example:
Body{background:url (logo_w3cn_194x79.gif) #FFF No-repeat Center;
The key is the final center, which defines the location of the picture. It can also be written as "top left" or "bottom right", or you can write the value "50 30" directly.
The effect is as follows:
How do I align text vertically in a div
If it is text, you cannot use the background method, you can use to increase the line spacing to achieve vertical center, complete code as follows:
<style>
Body{text-align:center;}
#center {Margin-right:auto;
Margin-left:auto;
height:200px;
Background: #F00;
width:400px;
Vertical-align:middle;
line-height:200px;
}
</style>
<body>
<div id= "center" ><p>test content</p></div>
</body>
Description
Vertical-align:middle indicates that the line is centered vertically, we increase the spacing to be as high as the entire Div line-height:200px, and then insert the text and center it vertically.
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