Ordering of vendor-specific CSS declarations

by

The best practise is undisputedly to have the unprefixed property last:

.foo {
    -moz-border-radius: 10px;    /* Mozilla */
    -webkit-border-radius: 10px; /* Webkit */
    border-radius: 10px;         /* W3C */
}

Whichever is last out of -webkit-border-radius and border-radius will be the one that’s used.

-webkit-border-radius is the “experimental” property – the implementation may contain deviations from the specification. The implementation for border-radius should match what’s in the specification.

It’s preferable to have the W3C implementation used when it’s available, to help ensure consistency between all the browsers that support it.

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