Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.14)
// Compass (v1.0.1)
// ----

// use the ampersand to nest the code within the initial .module

.module {
  background-color: #CC6699;
  box-sizing: border-box;
  padding: 0 4%;
  width: 80%;  
  
  &:first-child {
    border: 4px solid #000;
  }
  
  &:nth-child(even) {
    background-color: #003366;
  }
  
  .lt-ie9 & {
    width: 72%;
  }
  
  & a { 
    hover: red;
    & & { size: 2px;}
  }
}

SassMeister-output.css

.module {
  background-color: #CC6699;
  box-sizing: border-box;
  padding: 0 4%;
  width: 80%;
}
.module:first-child {
  border: 4px solid #000;
}
.module:nth-child(even) {
  background-color: #003366;
}
.lt-ie9 .module {
  width: 72%;
}
.module a {
  hover: red;
}
.module a .module a {
  size: 2px;
}