gistfile1.txt

%button {
  color: red;
  font-size: 14px;
}

%button-big {
  font-size: 18px;
}


## Problem:  
Need a button with a different font-size

## Solution 1:

%button-medium {
 font-size: 16px;
}

.my-class {
  @extend %button-medium;
}

## Solution 2:

.my-class {
  @extend %button;

  font-size: 16px;
}