Element button pseudo-element :before generated with transform background cursor default position absolute outline none box-sizing content-box height 0px margin 0px font-size 16px width 25px transition z-index auto text-shadow display block border-radius box-shadow overflow visible font-weight normal padding 0px status line-height normal float none opacity 1 border 1px rgba(255, 255, 255, 0.909804) solid