Rounded trapezoid with CSS

Question

I\'m having a slight problem with css. I need a trapezoid div which upper left corner(the one with the angle above 90 degrees) is rounded. I already know that this:

Answer 1

Voila:

css:

.trapezoid{
    vertical-align: middle;
    background: red;
    padding-left: 200px;
    height: 120px;
    width: 150px;
    position: relative;
    border-top-left-radius: 40px;
    overflow: hidden;
    background-clip: content-box;
}

.trapezoid:after{
    content: '';
    margin-left: -100px;
    top: 0;
    height: 120px;
    background: red;
    transform: skew(-31deg,0deg);
    -o-transform: skew(-31deg,0deg);
    -ms-transform: skew(-31deg,0deg);
    -moz-transform: skew(-31deg,0deg);
    -webkit-transform: skew(-59deg,0deg);
    position: absolute;
    width: 1000px;
    border-top-left-radius: 40px;
}

Demo:
http://jsfiddle.net/n3TLP/24/