.rcorner-container{position:relative;min-height:1px}.rcorner-20,.rcorner-20-grey{position:absolute;width:20px;height:20px;z-index:1000;display:block}.rcorner-20{background:transparent url('https://ii.alatest.com/css/common/border-radius-20.png') no-repeat 0 0}.rcorner-20-grey{background:transparent url('https://ii.alatest.com/css/common/border-radius-20-grey.png') no-repeat 0 0}.rcorner-lt{left:0;top:0;background-position:0 0}.rcorner-rt{right:0px;top:0px;background-position:100% 0}.rcorner-lb{left:0;bottom:0;background-position:0 100%}.rcorner-rb{right:0;bottom:0;background-position:100% 100%}