Grd CSS网格框架

Grd是一个使用Flexbox布局的CSS网格框架。它很小只有512个字节（Gzip压缩）。特点：Simple: Provides just 2 base classes Grid and Cell and some modifiers.Light-weight: Only 512 bytes (Gzipped).Flexible: Easy to use Flexbox features.安装：# via npm
$ npm install grd

# via bower
$ bower install grd用法：<div class="Grid">
  <div class="Cell -3of12">3of12</div>
  <div class="Cell -9of12">9of12</div>
</div>