@-ms-keyframes example { from {background-color: red;} to {background-color: yellow;} } @-o-keyframes example { from {background-color: red;} to {background-color: yellow;} } div.cls { color: rgba(51, 170, 51, .1); width: calc(100% - 80px); transform: rotate(45deg); } img { filter: grayscale(0.5) blur(10px); } a[href*="example"], * [lang^=en] { font-size: 2em; } @supports (display: flex) { @media screen and (min-width: 900px) { article { display: flex; } } } @media only screen and (orientation: landscape) { body { background-color: lightblue; } } @page :first { margin: 2cm; } @font-face { font-family: "Open Sans"; src: url("/fonts/OpenSans-Regular-webfont.woff2") format("woff2"), url("/fonts/OpenSans-Regular-webfont.woff") format("woff"); }