<! Doctype HTML public "-// W3C // dtd xhtml 1.0 strict // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312"/>
<Style type = "text/CSS">
<! --
Div {
Position: absolute; // absolute location
Top: 50%; // 50% from top
Left: 50%;
Margin:-100px 0 0-200px; // set the negative value of this Div's margin-top to half of its own height, the value of margin-left is also the negative value of half of its own width. (feeling like a tongue twister)
Width: 400px; // If the width is 400, the margin-top value is-200px.
Height: 200px; // if the height is 200, margin-left is-100px;
Border: 1px solid red;
Line-Height: 200px;
Font-size: 16px;
Text-align: center;
Z-index: 99; // floating on the top
}
-->
</Style>
<Div> welcome to PhP programmer site www.phperz.com </div>
