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// https://css-tricks.com/centering-in-the-unknown/
.block{
  text-align: center;
  
  &:before{
    content: '\200B';
    display: inline-block;
    vertical-align: middle;
    height: 100%; width: .1px;
  }
  
  .centered{
    display: inline-block;
    vertical-align: middle;
  }
}