How to center body on a page?

Question

I'm trying to center the body element on my HTML page.

Basically, in the CSS I set the body element to be display: inline-block; so that it is only as wide as its contents. That works fine. However, margin: 0px auto; doesn't center it on the page.

Does anyone know how to fix this? I want the big blue square to be centered on the page, not floating to the left like it is now.

Here's my CSS:

body {
    display: inline-block;
    margin: 0px auto;
    text-align: center;
}

Answer 1

Also apply text-align: center; on the html element like so:

html {
  text-align: center;
}

A better approach though is to have an inner container div, which will be centralized, and not the body.