问题
Struggling a little to centrally align a leaderboard ad on Dots & Dashes – positions itself correctly on certain pages, and incorrectly on several others, by the seems of it.
Have applied the <div class="center">AD CODE</div> tag, although that doesn't seem to have done the trick...
Any advice would be greatly appreciated, as per always! Thanks.
回答1:
Do you mean center horizontally or vertically?
To center horizontally you can add the following to the top of the page (within the <head></head> section):
<style type="text/css">
.center {
text-align:center;
}
</style>
The above will control the class that you assigned (center) and adds text-align:center; to it.
If you are looking to center the div vertically, please post a JSFiddle
回答2:
To center something horizontally within the DIV use the following code...
<style type="text/css">
.center {
text-align:center;
}
</style>
But to center something horizontally within the WINDOW and DIV, try this....
<style type="text/css">
.center {
text-align: center;
margin: 0 auto;
}
</style>
来源：https://stackoverflow.com/questions/24315140/centre-align-leaderboard-ad