这又是一款非常棒的纯CSS3按钮动画，这款CSS3按钮的特点是具有3D立体的视觉效果，而且按钮具有弹性，点击按钮的时候很有质感。尤其是在背景的衬托下，按钮更显晶莹剔透，立体感更加强烈。这款按钮的另一个特点是完全用CSS3实现动画效果，并且原理也简单，仅仅是利用了CSS3对checkbox的重新渲染。
HTML代码：
<div class="container"> <div class="toggle"> <input type="checkbox"> <span class="button"></span> <span class="label">+</span> </div> <div class="toggle"> <input type="checkbox" checked> <span class="button"></span> <span class="label">–</span> </div></div>
CSS代码
.container { text-align: center; position: absolute; margin-top: -80px; width: 100%; top: 50%;
}.toggle { margin: 4px; display: inline-block;
}.toggle { box-shadow: inset 0 0 35px 5px rgba(0, 0, 0, 0.25), inset 0 2px 1px 1px rgba(255, 255, 255, 0.9), inset 0 -2px 1px 0 rgba(0, 0, 0, 0.25); border-radius: 8px; background: #ccd0d4; position: relative; height: 140px; width: 140px;
}.toggle:before { box-shadow: 0 0 17.5px 8.75px white; border-radius: 118.3px; background: white; position: absolute; margin-left: -50.4px; margin-top: -50.4px; opacity: 0.2; content: ""; height: 100.8px; width: 100.8px; left: 50%; top: 50%;
}.toggle .button { -webkit-filter: blur(1px); -moz-filter: blur(1px); filter: blur(1px); transition: all 300ms cubic-bezier(0.23, 1, 0.32, 1); box-shadow: 0 15px 25px -4px rgba(0, 0, 0, 0.5), inset 0 -3px 4px -1px rgba(0, 0, 0, 0.2), 0 -10px 15px -1px rgba(255, 255, 255, 0.6), inset 0 3px 4px -1px rgba(255, 255, 255, 0.2), inset 0 0 5px 1px rgba(255, 255, 255, 0.8), inset 0 20px 30px 0 rgba(255, 255, 255, 0.2); border-radius: 96.32px; position: absolute; background: #ccd0d4; margin-left: -48.16px; margin-top: -48.16px; display: block; height: 96.32px; width: 96.32px; left: 50%; top: 50%;
}.toggle .label { transition: color 300ms ease-out; text-shadow: 1px 1px 3px #ccd0d4, 0 0 0 rgba(0, 0, 0, 0.8), 1px 1px 4px white; line-height: 139px; text-align: center; position: absolute; font-weight: 700; font-size: 42px; display: block; opacity: 0.9; height: 100%; width: 100%; color: rgba(0, 0, 0, 0.4);
}.toggle input { opacity: 0; position: absolute; cursor: pointer; z-index: 1; height: 100%; width: 100%; left: 0; top: 0;
}.toggle input:active ~ .button { box-shadow: 0 15px 25px -4px rgba(0, 0, 0, 0.4), inset 0 -8px 30px 1px rgba(255, 255, 255, 0.9), 0 -10px 15px -1px rgba(255, 255, 255, 0.6), inset 0 8px 25px 0 rgba(0, 0, 0, 0.4), inset 0 0 10px 1px rgba(255, 255, 255, 0.6);
}.toggle input:active ~ .label { font-size: 40px; color: rgba(0, 0, 0, 0.45);
}.toggle input:checked ~ .button { box-shadow: 0 15px 25px -4px rgba(0, 0, 0, 0.4), inset 0 -8px 25px -1px rgba(255, 255, 255, 0.9), 0 -10px 15px -1px rgba(255, 255, 255, 0.6), inset 0 8px 20px 0 rgba(0, 0, 0, 0.2), inset 0 0 5px 1px rgba(255, 255, 255, 0.6);
}.toggle input:checked ~ .label { font-size: 40px; color: rgba(0, 0, 0, 0.4);
}本文链接：http://www.codeceo.com/article/cool-3d-css3-elastic-button.html
本文作者：码农网 – 小峰
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