Several commonly used classic CSS techniques _ Experience Exchange

Use Line-height to center vertically

line-height:24px;
If you use a fixed-width container and you want a row to be centered vertically, you can use Line-height (which is the same height as the parent container), and more vertically centered summaries are here.

Clear Container Float

#main {
Overflow:hidden;
}
This issue has been mentioned before and more information can be seen here.

Do not allow links to be broken lines

A
White-space:nowrap;
}
The above settings can avoid the link folding line, but personal advice long link will have the corresponding line (for the discussion of line-wrapping, see the center of the record).

Always have Firefox show scroll bars

HTML {
overflow:-moz-scrollbars-vertical;
}
More Mozilla/firefox private CSS properties can be referenced here. Cross-browser support is required, or you can use the

Body, HTML {
min-height:101%;
}
Center The Block element horizontally

margin:0 Auto;
is actually

Margin-left:auto;
Margin-right:auto;
This technique basically all CSS textbooks will have instructions, don't forget to add a width to it. Exploer can also be used under

body{
Text-align:center;
}
Then define the inner layer container

Text-align:left;
Recovery.

Hide scroll bars for exploer textarea

TEXTAREA {
Overflow:auto;
}
Exploer By default textarea will have a vertical scroll bar (don't ask me why).

Set up print paging

H2 {
Page-break-before:always;
}
The Page-break-before property enables you to set pagination when you print a Web page.

Delete a dashed box on a link

A:active, A:focus {
Outline:none;
}
Firefox defaults to the link when the focus (or click) plus a dotted box, use the above properties can be deleted.

The simplest CSS reset

* {
margin:0; padding:0
}
If you want to "complex", refer to Yui's approach (and here). The original message also had users say their views

I have to agree with Niall Doherty, * {margin:0px; padding:0px;}
Basically means "traverse every CSS element and give it these
Attributes ". That's a very unnecessary strain on the server and
A bad semantic practice, as your have to give some elements
Padding/margin again, after stripping them.