CSS online compress, format. Compression supports color compression, removes comments, spaces and newlines, useless empty blocks, leading zeros from decimal values, 0 units, none, etc. Formatting supports custom indentation

div{color:#FFF;background-color:rgba(255,0,0,0.5);margin:.05em!important;padding:1.05em;font-size:.005em;height:calc(100vh - 60px)}