纯文本，仅CSS，字体独立，内联加载指示。
这个项目试图模仿像cli-spinners那样的命令行旋转器（其中大部分被从中取出）并将它们带到网络上。 http://tawian.io/text-spinners/
<span class="loading"></span>
<span class="loading dots"></span>
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<span class="loading line"></span>
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<span class="loading lifting"></span>
<span class="loading hamburger"></span>
<span class="loading bar"></span>
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<span class="loading circle"></span>
<span class="loading triangle"></span>
<span class="loading bullet"></span>
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<span class="loading toggle"></span>
<span class="loading box-bounce"></span>
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