$icons: (
  "pen":"\e900",
  "pencil":"\e900"
);

@each $name, $glyph in $icons {
  .icon-#{$name}:before {
    content: $glyph;
  }
}

View Compiled
Run Pen

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.