How do I prevent an image from overflowing a rounded corner box?

Question

If I use this code, the image isn\'t clipped by the div\'s rounded corners (resulting in the image\'s square corners covering up the div\'s rounded ones):

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Answer 1

This may or may not work in your situation, but consider making the image a CSS background. In FF3, the following works just fine:

<div style="
  background-image:   url(big-image.jpg);
  border-radius:      1em;
  height:             100px;
  -moz-border-radius: 1em;
  width:              100px;"
></div>

I'm not sure there's another workaround — if you apply a border to the image itself (say, 1em deep), you get the same problem of square corners.

Edit: although, in the "adding a border to the image" case, the image inset is correct, it's just that the image isn't flush with the div element. To check out the results, add style="border:1em solid black;border-radius:1em;-moz-border-radius:1em;" to the img tag (with width and height set appropriately, if necessary).

Answer 2

You need to specify an exact width and heigth with overflow:hidden, if you want your div to clip your image

Answer 3

My latest Chrome, Firefox, and Safari clip the image to the container's border-radius (as intended).

http://jsfiddle.net/RQYnA/12/embedded/result/

In Firefox 15, I see the image clipped when the container has {overflow: hidden}. (Clipping of child content seems to have been added in Gecko 2.0.)

In Chrome 23 & Safari 5, I see the image clipped only when the container has {position: static; overflow: hidden} and the image has {position: static}.

Answer 4

There is also now background-clip in css3. It works in all the major browsers. The options are border-box, padding-box and content-box. In your case, I think you'll want to use padding-box.

-webkit-background-clip: padding-box;
-moz-background-clip:    padding; 
background-clip:         padding-box;