without used -webkit-appearance: none, -appearance: none css to checkbox.
input[id="cb1"] + label { display: inline-block; width: 14px; height: 14px; border: 1px solid #bcbcbc; border-radius: 2px; cursor: pointer; } input[id="cb1"]:checked + label:after { position: relative; top: -4px; left: 2px; content: '\2714'; font-size: 14px; } input[id="cb1"] { display: none; }
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