CSS3实现的player播放按钮

完成的效果如下

查看效果并下载

Step 1：先了解border的原理：

Step 2：HTML代码结构

<section class="playContainer">
   <li class="playBtn">
    <a href="#" title="start">Start</a>
  </li>
   <li class="pauseBtn">
    <a href="#" title="pause">Pause</a>
  </li>
   <li class="stopBtn">
    <a href="#" title="stop">Stop</a>
  </li>
   <li class="forwardBtn playBtn">
    <a href="#" title="forward">Forward</a>
    <a href="#" title="forward">Forward</a>
  </li>
   <li class="rewindBtn">
    <a href="#" title="rewind">Rewind</a>
    <a href="#" title="rewind">Rewind</a>
  </li>
  <li class="ejectBtn">
    <a href="#" class="arrow">Eject</a>
    <a href="#" class="dash">Eject</a>
  </li>
</section>

Step 3：画背景圆，position：relative

.playContainer li { position: relative; float: left; border: 25px solid #404040; color: #404040; height: 0; 0; -webkit-border-radius: 100%; -moz-border-radius: 100%; -o-border-radius: 100%; border-radius: 100%; margin: 0 20px; }

Step 4：画stop按钮，要让按钮居中。

按钮相对外层圆圈绝对定位，从圆圈的中心开始，所以要调整top和left值

stop按钮边长14px，相对原点需要向上、向左移动7个像素，居中。

全部的CSS如下：

   .playContainer { position: relative; float: left; background: rgba(0, 0, 0, 0.8); padding: 20px; }
.playContainer li { position: relative; float: left; border: 25px solid #404040; color: #404040; height: 0; 0; -webkit-border-radius: 100%; -moz-border-radius: 100%; -o-border-radius: 100%; border-radius: 100%; margin: 0 20px; }
.playContainer a { border-style: solid; text-indent: -9999px; position: absolute; top: -8px; left: -3px;  }

.playBtn a { border-color: transparent transparent transparent #fff; border- 8px 0 8px 12px;   0; height: 0; }
.pauseBtn a { border-color: transparent white;  border- 0 6px; height: 15px;  6px; left: -9px; }
.stopBtn a { border: 7px solid #fff; height: 0;  0; left: -7px; top: -7px;}
.forwardBtn a { border-left- 8px; left: 1px; }
.forwardBtn a:first-child { margin-left: -7px;  }

.rewindBtn a { border- 8px 8px 8px 0; border-color: transparent #fff transparent transparent;  0; height: 0; }
.rewindBtn a:first-child { margin-left: -7px; }

.ejectBtn a.arrow { border- 0 8px 8px 8px; border-color: transparent transparent #fff transparent; top:-26px; left:-8px; }
ectBtn a.dash { border- 0 0 4px; border-color: transparent transparent #fff; height: 0; 16px; left: -8px; top: 4px; }