CSS to always center text in a page - css

Question

I am trying to add text to center of the page. Even if a user try to resize the page, text in the page should be aligned to center. I am close to the solution but missing some position in the code. Here is my code. Any help would be highly appreciated.
html code
<div class="errorMessageContainer">
<div class="errorMessageIcon">
:(
</div>
<div class="errorMessageHeaderContainer">
<div class="errorMessageHeader">
I am trying to center me in a page.
</div>
<div class="errorMessageText">
<span class="errorMessageSubHeader">I want to float.</span>Even if page is restored or forced minimized. <span class="errorContact">Please </span> help me on this.
</div>
</div>
</div>
css code
body {
background-color: #666666;
}
.errorMessageContainer {
width: 620px;
margin: 200px 0 0 300px;
}
.errorMessageIcon {
font-family: Segoe UI Semibold;
font-size: 72px;
color: #29abe0;
display: inline-block;
vertical-align: top;
}
.errorMessageHeaderContainer {
display: inline-block;
width: 500px;
padding: 20px 0 0 30px;
}
.errorMessageHeader {
font-family: Segoe UI Light;
font-size: 28px;
color: #ffffff;
}
.errorMessageSubHeader {
font-weight: bold;
}
.errorMessageText {
font-family: Segoe UI;
font-size: 13px;
color: #ffffff;
width: 450px;
}
.errorContact a {
color: #ffffff;
text-decoration: underline;
}

Answer 1

this will put your message container in center of the page :
.errorMessageContainer {
width: 620px;
height: 100px;
position: fixed;
top: 50%;
left: 50%;
margin-left: -310px;
margin-top: -50px;
}
see the fiddle

Answer 2

Try this:
.errorMessageContainer {
width: 620px;
margin: 200px auto 0;
}

Answer 3

You can use margin: 200px auto 0 auto; for the .errorMessageContainer see fiddle here: http://jsfiddle.net/DSATE/

Answer 4

.errorMessageContainer{
position: absolute;
height: 200px;
width: 400px;
margin: -100px 0 0 -200px;
top: 50%;
left: 50%;
}

Answer 5

The best approach is to set up your display and margins correctly. Do not set values for this otherwise it will fail if the div changes in size. heres an example I made up using a div wrapper and the value display:table-cell
DEMO http://jsfiddle.net/kevinPHPkevin/DSATE/1/