<style type="text/css"> .chk_1 { width: 20px; height: 20px; position: absolute; top: 15px; left: 10px; } .chk_1 + label { background: #ccc; width: 20px; height: 20px; display: inline-block; position: absolute; top: 17px; left: 12px; } .chk_1:checked + label { background:red; } </style> </head> <body> <input type="checkbox" > <label for="checkbox_a1"></label> </body>