What is the best way to position a div at the center with a set width and fixed positioning?

I'm currently working on coding and attempting to center a div horizontally in the middle of the page. The div is empty at the moment, just a plain white rectangle with specific dimensions. Here's my code snippet:

#wrapper{
width:500px;
height:100%;
position:fixed;
background-color:#fff;
}

Essentially, I am looking to create a 500px width white rectangular shape that is centered in the middle of the page horizontally, utilizing the full height of the page.

Any help or suggestions would be greatly appreciated. Thanks.

csshtmlalignmentcss-positioncenter

Answer №1

To center a div in fixed/absolute position, you can set left:50% and then add margin-left (width-of-div / 2).

Give this a try:

#centered{
   width:500px;
   height:100%;
   position:fixed;
   background-color:#fff;
   left:50%;
   margin-left:-250px;
}

Check out the DEMO here!

Answer №2

To center a div, you can set the left position to 50% and apply a negative margin equal to half of the width.

#wrapper{
width:500px;
height:100%;
left: 50%;
margin-left: -250px;
position:fixed;
background-color:#fff;
}

If you plan on using this div as a container for a webpage, it's recommended to remove the fixed position and instead use margin: 0 auto; to center the div horizontally.

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