Element button pseudo-class :active generated with overflow hidden transform height auto border-radius position relative padding 20px cursor progress font-size 16px font-weight normal margin 0px float none width auto transition border 1px #018dc4 solid line-height normal text-shadow -1px -1px 0px rgba(15,73,168,0.66) display block box-shadow 2px 2px 2px rgba(0,0,0,0.2) box-sizing content-box background z-index 2