image-light-dark-ref.html (321B)
1 <!doctype html> 2 <style> 3 div { 4 width: 100px; 5 height: 100px; 6 &.light { 7 background-image: url("/images/green.png"); 8 } 9 &.dark { 10 background-image: url("/images/red.png"); 11 } 12 } 13 </style> 14 <div class="dark"></div> 15 <div class="light"></div> 16 <div class="dark"></div> 17 <div class="light"></div>