bodyborder.scss

// A sass @mixin to create the body border effect
// with pseudo elements as described by CSS-Tricks:
// http://css-tricks.com/body-border/

@mixin bodyborder($color, $width) {
  body {
    border-left: $width solid $color;
    border-right: $width solid $color;
    
    &:before, &:after {
      content: "";
      position: fixed;
      background: $color;
      height: $width;
      left: 0;
      right: 0;
    }
    &:before {
      top: 0;
    }
    &:after {
      bottom: 0;
    }
  }
}

// usage
// @include bodyborder(#900, 10px);