frame.css

/*
frameは、基本的な構造設計に用いるクラスです。 <br>
z*クラスとともに用いることで、影をつけることができます。

```
<div class="row">
  <div class="flex flex-xs-6">
    <div class="frame z1 padding-8">
      z1 frame
    </div>
  </div>
  <div class="flex flex-xs-6">
    <div class="frame z2 padding-8">
      z2 frame
    </div>
  </div>
  <div class="flex flex-xs-6">
    <div class="frame z3 padding-8">
      z3 frame
    </div>
  </div>
  <div class="flex flex-xs-6">
    <div class="frame z4 padding-8">
      z4 frame
    </div>
  </div>
  <div class="flex flex-xs-6">
    <div class="frame z5 padding-8">
      z5 frame
    </div>
  </div>
</div>
```
*/

.row .frame{
  width: 100%;
  box-sizing: border-box;
  background-color: white;
}

.column .frame{
  height: 100%;
  box-sizing: border-box;
  background-color: white;
}

.z1{
  box-shadow: 0 3px 1px -2px rgba(0,0,0,.14),0 2px 2px 0 rgba(0,0,0,.098),0 1px 5px 0 rgba(0,0,0,.084);
}
.z2{
  box-shadow: 0 2px 4px -1px rgba(0,0,0,.14),0 4px 5px 0 rgba(0,0,0,.098),0 1px 10px 0 rgba(0,0,0,.084);
}
.z3{
  box-shadow: 0 3px 5px -1px rgba(0,0,0,.14),0 6px 10px 0 rgba(0,0,0,.098),0 1px 18px 0 rgba(0,0,0,.084);
}
.z4{
 box-shadow: 0 5px 5px -3px rgba(0,0,0,.14),0 8px 10px 1px rgba(0,0,0,.098),0 3px 14px 2px rgba(0,0,0,.084);
}
.z5{
 box-shadow: 0 8px 10px -5px rgba(0,0,0,.14),0 16px 24px 2px rgba(0,0,0,.098),0 6px 30px 5px rgba(0,0,0,.084);
}