round-color: $fallback_hex_gradient_bg;
  background-color: mix($startColour, $endColour, 60%);
  background-image: -webkit-gradient(linear, 0 0, 0 100%, from($startColour), to($endColour));
  background-image: -webkit-linear-gradient(top, $startColour, $endColour);
  background-image: -moz-linear-gradient(top, $startColour, $endColour);
  background-image: -o-linear-gradient(top, $startColour, $endColour);
  background-image: linear-gradient(to bottom, $startColour, $endColour);
  background-repeat: repeat