@import "reset-to-defaults.css"; window { background-color: rgb(0,255,0); } button { border-width: 5px; border-style: solid; border-color: rgba(255,0,0,0.6); padding: 10px; background-color: rgb(0,0,255); } #button1 { background-clip: border-box; } #button2 { background-clip: padding-box; } #button3 { background-clip: content-box; } #reference1 { border-color: rgb(153,0,102); } #reference2 { border-color: rgb(153,102,0); } #reference3 { border-color: rgb(153,102,0); background-color: transparent; } #reference3inner { padding: 0; border-width: 0; border-color: rgb(0, 255, 0); background-color: rgb(0,0,255); }