Adding border-radius for embedded YouTube video

Question

Please see this fiddle. Notice instantly before loading the border-radius works fine. A few milliseconds later the rounded corners disappear.

How can I

Answer 1

Here's an easy yet very practical and useful "hack-solution" to this challenging problem.

Just embed your iframe in a "div" element like this:

then add the following css to your HTML:

 div {
   position: relative;
   display:inline-block;
   margin:200px;
}
div:before {
    content: '';
    position: absolute;
    z-index: 5000;
    display: block;
    top: -27px;
    left: -27px;
    right: -27px;
    bottom: -27px;
    background-color: transparent;
    pointer-events: none;
    border: 30px solid white;
    border-radius: 50px;
}][1]

This is quite a flexible solution, though it uses some additional layer for border-radius. This method is also compatible with most (all) modern browsers. Hope it was useful.