<!DOCTYPE html> <html><head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Clock</title> <style type="text/css"> * { box-sizing: border-box !important; } .inner { width: 100%; height: 100%; background: white; border-radius: 100%; box-shadow: 0px 0px 18px black inset; } </style> </head> <body> <div style="width: 588px; height: 588px; padding: 26.01px;"> <div class="inner"></div> </div> </body></html>