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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>css3 transforms 3D文字翻开</title></head><body><div class="component"> <ul class="grid"> <li class="ot-letter-left"><span data-letter="R">R</span></li> <li class="ot-letter-top"><span data-letter="T">T</span></li> <li class="ot-letter-right"><span data-letter="L">L</span></li> <li class="ot-letter-bottom"><span data-letter="B">B</span></li> </ul></div><style>ul,li{ list-style:none;}.grid { list-style: outside none none; margin: 0; padding: 0; position: relative; width: 100%;}.grid li { float: left; font-size: 12em; line-height: 1.5; max-height: 290px; position: relative; text-align: center; width: calc(100% / 6);}.grid li span { color: hsla(0, 0%, 0%, 0.6); display: inline-block; font-weight: 900; line-height: 1; perspective: 550px; position: relative; transform-style: preserve-3d; z-index: 1;}.grid li span::before, .grid li span::after { bottom: 0; content: attr(data-letter); left: 0; line-height: inherit; position: absolute; right: 0; top: 0; transition: all 0.3s ease 0s; z-index: 2;}.grid li span::before { color: hsla(0, 0%, 0%, 0.12); text-shadow: none;}.ot-letter-left { background: none repeat scroll 0 0 #e74d3c;}.ot-letter-left span { text-shadow: 1px 4px 6px #e74d3c, 0 0 0 hsla(0, 0%, 0%, 0.3), 1px 4px 6px #e74d3c;}.ot-letter-left span::after { color: #e74d3c;}.ot-letter-left:hover span::after { color: #ea6253;}.ot-letter-right { background: none repeat scroll 0 0 #ea6657;}.ot-letter-right span { text-shadow: 1px 4px 6px #ea6657, 0 0 0 hsla(0, 0%, 0%, 0.3), 1px 4px 6px #ea6657;}.ot-letter-right span::after { color: #ea6657;}.ot-letter-right:hover span::after { color: #ed7a6e;}.ot-letter-top { background: none repeat scroll 0 0 #ee7f72;}.ot-letter-top span { text-shadow: 1px 4px 6px #ee7f72, 0 0 0 hsla(0, 0%, 0%, 0.3), 1px 4px 6px #ee7f72;}.ot-letter-top span::after { color: #ee7f72;}.ot-letter-top:hover span::after { color: #f09389;}.ot-letter-bottom { background: none repeat scroll 0 0 #e95949;}.ot-letter-bottom span { text-shadow: 1px 4px 6px #e95949, 0 0 0 hsla(0, 0%, 0%, 0.3), 1px 4px 6px #e95949;}.ot-letter-bottom span::after { color: #e95949;}.ot-letter-bottom:hover span::after { color: #eb6e60;}.ot-letter-left span::before, .ot-letter-left span::after { transform-origin: 0 50% 0;}.ot-letter-left span::before { transform: scale(1.08, 1) skew(0deg, 1deg);}.ot-letter-left span::after { text-shadow: -1px 0 0 hsla(0, 100%, 100%, 0.1), 3px 0 1px hsla(0, 0%, 0%, 0.4); transform: rotateY(-15deg);}.ot-letter-left:hover span::before { transform: scale(0.85, 1) skew(0deg, 20deg);}.ot-letter-left:hover span::after { transform: rotateY(-40deg);}.ot-letter-right span::before, .ot-letter-right span::after { transform-origin: 100% 50% 0;}.ot-letter-right span::before { transform: scale(0.85, 1) skew(0deg, 1deg);}.ot-letter-right span::after { text-shadow: 1px 0 0 hsla(0, 100%, 100%, 0.1), -3px 0 1px hsla(0, 0%, 0%, 0.4); transform: rotateY(15deg);}.ot-letter-right:hover span::before { transform: scale(0.85, 1) skew(0deg, -20deg);}.ot-letter-right:hover span::after { transform: rotateY(40deg);}.ot-letter-top span::before, .ot-letter-top span::after { transform-origin: 50% 100% 0;}.ot-letter-top span::before { transform: scale(1, 0.95) skew(-4deg, 0deg);}.ot-letter-top span::after { text-shadow: 0 1px 0 hsla(0, 100%, 100%, 0.1), 0 -3px 1px hsla(0, 0%, 0%, 0.4); transform: rotateX(-15deg);}.ot-letter-top:hover span::before { transform: translateY(-0.05em) scale(1, 0.55) skew(-10deg, 0deg);}.ot-letter-top:hover span::after { transform: translateY(-0.035em) rotateX(-40deg);}.ot-letter-bottom span::before, .ot-letter-bottom span::after { transform-origin: 50% 0 0;}.ot-letter-bottom span::before { transform: scale(1, 1.05) skew(4deg, 0deg);}.ot-letter-bottom span::after { text-shadow: 0 -1px 0 hsla(0, 100%, 100%, 0.1), 0 3px 1px hsla(0, 0%, 0%, 0.4); transform: rotateX(15deg);}.ot-letter-bottom:hover span::before { transform: translateY(-0.035em) scale(1, 1.2) skew(10deg, 0deg);}.ot-letter-bottom:hover span::after { transform: translateY(0.045em) rotateX(40deg);}</style></body></html>
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