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Setting the width of a block-level element will prevent it from stretching out to the edges of its container to the left and right. Then, you can set the left and right margins to auto to horizontally center that element within its container. The element will take up the width you specify, then the remaining space will be split evenly between the two margins. The only problem occurs when the browser window is narrower than the width of your element. The browser resolves this by creating a horizontal scrollbar on the page. Let's improve the situation Using max-width instead of width in this situation will improve the browser's handling of small windows. This is important when making a site usable on mobile. Resize this page to check it out! By the way, max-width is supported by all major browsers including IE7+ so you shouldn't be afraid of using it.

We're the same size now!

Hooray!

relative behaves the same as static unless you add some extra properties.

Setting the top, right, bottom, and left properties of a relatively-positioned element will cause it to be adjusted away from its normal position. Other content will not be adjusted to fit into any gap left by the element.

This element is relatively-positioned. If this element was position: static; its absolutely-positioned child would escape and would be positioned relative to the document body.

This element is absolutely-positioned. It's positioned relative to its parent.

The margin-left style for sections makes sure there is room for the nav. Otherwise the absolute and static elements would overlap

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Notice what happens when you resize your browser. It works nicely!

I feel like I'm floating!

In this case, the section element is actually after the div. However, since the div is floated to the left, this is what happens: the text in the section is floated around the div and the section surrounds the whole thing. What if we wanted the section to actually appear after the floated element?

I feel like I'm floating!

Using clear we have now moved this section down below the floated div. You use the value left to clear elements floated to the left. You can also clear right and both.

An Image Uh oh... this image is taller than the element containing it, and it's floated, so it's overflowing outside of its container!

An Image Much better!

This example works just like the last one. Notice we put a clearfix on the container. It's not needed in this example, but it would be if the nav was longer than the non-floated content.

an image You could even use min-width and max-width to limit how big or small the image can get!

This example works just like the last one. Notice we put a clearfix on the container. It's not needed in this example, but it would be if the nav was longer than the non-floated content.