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Asked: 2026-05-14T05:43:06+00:00

I am using CSS rounded corners for firefox and I have the following problem

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I am using CSS rounded corners for firefox and I have the following problem with content boundaries:

Code

<html>
<head>
   <style>
      #outter {
            width: 200px;
            margin: auto;
            text-align: center;
            border: 1px solid #333;
            -moz-border-radius: 15px;
        }
        #inner {
            background: red;
            opacity: 0.5;
        }
    </style>
</head>
<body>
<div id="outter">
    <div id="inner">text</div>
</div>
</body>
</html>

Effect

alt text http://img256.imageshack.us/img256/2108/testew.png

I can avoid this problem by defining -moz-border-radius for each outter’s child. There is any other way I am missing?

Edit

A harder test with multiple inner divs with different background-color for each one:

<div id="outter">
    <div id="inner1" style="background: blue">text</div>
    <div id="inner2" style="background: gray">text</div>
    ...
    <div id="innerN" style="background: yellow">text</div>
</div>
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1 Answer

  1. Editorial Team

    You can also do this:

      #outter {
        width: 200px;
        margin: auto;
        text-align: center;
        border: 1px solid #333;
        -moz-border-radius: 15px;
        background: red;
    }
    #inner {
        opacity: 0.5;
    }

    Moving the background to the rounded parent will render correctly, see here for an example: http://jsfiddle.net/mE8En/ (only works in firefox!) add the webkit border radius if you want to support other webkit based browsers as well, like this:

    -moz-border-radius: 15px; 
-webkit-border-radius: 15px;

    Update for edit: To handle the inner divs in firefox subtract a pixel on the inner div to compensate for the border, resulting in this:

    #outter {
    width: 200px;
    margin: auto;
    text-align: center;
    border: 1px solid #333;
    -moz-border-radius: 15px;
    -webkit-border-radius: 15px;
    background: red;
}
#outter > div:first-child {
    -moz-border-radius-topleft: 14px;
    -moz-border-radius-topright: 14px;
     -webkit-border-top-left-radius: 14px;
     -webkit-border-top-right-radius: 14px;
}
#outter > div:last-child {
    -moz-border-radius-bottomleft: 14px;
    -moz-border-radius-bottomright: 14px;
     -webkit-border-bottom-left-radius: 14px;
     -webkit-border-bottom-right-radius: 14px;
}
#inner {
    opacity: 0.5;
}
​

    Note: the radii aren’t perfect on the inner divs in webkit, adjust as desired…this is because the rendering isn’t pixel perfect between browsers.

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