Element button pseudo-element :after generated with width auto transition overflow visible padding 20px opacity 1 font-size 20px border-radius margin 0px box-sizing content-box z-index auto position static background display inline-block cursor pointer line-height normal font-weight bold float none transform border 1px rgba(1,141,196,0) solid height auto outline none box-shadow 2px 2px 2px rgba(0,0,0,0.2) text-shadow