Element button pseudo-element :after generated with transition box-shadow 1px 1px 1px rgba(0,0,0,0.3) padding 20px transform width 160px margin 0px box-sizing content-box line-height 1 position static height auto overflow hidden font-size 16px border 0px rgba(0,0,0,1) solid z-index auto display block cursor default float none border-radius font-weight normal background text-shadow 1px 1px 1px rgba(0,0,0,0.2)