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| <!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> <style type="text/css"> :root { --ruben-width: 200px; --ruben-height: 200px; --ruben-bg-color: #ff0000; }
.ruben { background-color: var(--ruben-bg-color); width: var(--ruben-width); height: var(--ruben-height); }
.ruben1 { background-color: var(--ruben-bg-color); width: var(--ruben-width); height: var(--ruben-height); } </style> </head> <body> <div class="ruben"></div> <hr/> <div class="ruben1"></div> </body> </html>
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