.curved{box-sizing:border-box;min-height:40px;position:relative;width:100%;z-index:1}.curved:after{background:inherit;border-bottom-left-radius:50% 100%;border-bottom-right-radius:50% 100%;content:"";height:100%;left:0;position:absolute;top:0;transform:translateY(100%);transform-origin:top left;width:100%;z-index:0}