.rounded-tr {
 position:absolute;top:0px;right:0px;
 z-index:99;
}

.rounded-tl {
 position:absolute;top:0px;left:0px;
 z-index:99;
}

.rounded-ll {
 position:absolute;bottom:0px;left:0px;overflow: none;
 z-index:99;
}

.rounded-lr {
 position:absolute;bottom:0px;right:0px;overflow: none;
 z-index:99;
}