CSS Div Angel (premio)

.background {
    background-color:black;
    height:368px;
    position: relative;
    overflow: hidden;
}
.sold {
    background-color:red;
    font-size:26px;
    width:200px;
    text-align:center;
    height:40px;
    color:white;
    line-height:40px;
    -webkit-transform: rotate(-45deg);
    -ms-transform: rotate(-45deg);
    transform: rotate(-45deg);
    top: 37px;
    left: -43px;
    position: relative;
}
MIR AMITH