SASS mixin for ol' IE

gistfile1.scss

@mixin desk {
  @include media($desk) {
    @content;
  }
  .old-ie & {
    @content;
  }
}

#logo {
  @include desk {
    background-size:auto;
    background-position:0 0;
    margin-top: 19px;
    padding-top: 479px;
    width: 339px;
  }
}

@media screen and (min-width: 1024px) {
  #logo {
    background-size: auto;
    background-position: 0 0;
    margin-top: 19px;
    padding-top: 479px;
    width: 339px; 
  } 
}
.old-ie #logo {
  background-size: auto;
  background-position: 0 0;
  margin-top: 19px;
  padding-top: 479px;
  width: 339px; 
}