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<div class="box box-red">
  <a href="#">Box</a>
</div>
$white: #FFF;
$red: #C0392B;
$black: #222;


body {background:$black}

.box {
  width: 25%;
  height: 20rem;
  display:inline-block;
  vertical-align: top;
  margin-right: -4px;
  text-align: center;
  color: white;
  font-size: 16px;
  line-height: 20em;
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 6px;
}

.box-red {
  background: $red;
  &:hover{background: darken($red,10%);}
  
  a {
    color: lighten($red,40%);
    text-decoration: none;
    
    &:hover{
       color: $white;
    }
  }
  
}
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