1. #selector {
  2.   .mixin1;
  3.   .mixin2(1px);
  4.  
  5.   background: none;
  6.   border: 1px #000 solid;
  7.   color: @blue-text;
  8.   width: 200px;
  9.  
  10.   .child-selector {
  11.  
  12.   }
  13.  
  14.   &.pseudo-selector {
  15.  
  16.   }
  17. }