Element button pseudo-element :before generated with padding 0px font-weight normal font-size 16px float none opacity 1 height 1em display block margin 0px box-shadow 4em 0em 0px #1abc9c transform cursor default box-sizing content-box overflow visible status text-shadow border 0px rgba(0,0,0,1) solid background line-height normal z-index auto width 1em position relative transition border-radius outline none