<!DOCTYPE HTML> <html> <body style="background:white;"> <div style="background-color: black; width: 150px; height: 100px; position: absolute; left: 10px; top: 10px;"></div> <!-- Left side vertical. --> <div style="position: absolute; left: 9px; top: 9px; width: 2px; height: 102px; z-index: 2; background: red;"></div> <!-- Right side vertical. --> <div style="position: absolute; left: 159px; top: 9px; width: 2px; height: 102px; z-index: 2; background: red;"></div> <!-- Top horizontal bar. --> <div style="position: absolute; left: 9px; top: 9px; width: 152px; height: 2px; z-index: 2; background: red;"></div> <!-- Bottom horizontal bar. --> <div style="position: absolute; left: 9px; top: 109px; width: 152px; height: 2px; z-index: 2; background: red;"></div> </body> </html>