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Check Sample
<!DOCTYPE>
<html>
<head>
    <title>Check Sample</title>
    <style>
        .check-style-equal-width {
            width: 8px;
            height: 16px;
            border-color: #009933;
            border-style: solid;
            border-width: 0 5px 5px 0;
            transform: rotate(45deg);
        }
        .check-style-unequal-width {
            width: 8px;
            height: 16px;
            border-color: #009933;
            border-style: solid;
            border-width: 0 3px 5px 0;
            transform: rotate(45deg);
        }
        .check-style-select-effect {
            width: 8px;
            height: 8px;
            border-color: #009933;
            border-style: solid;
            border-width: 0 3px 3px 0;
            transform: rotate(45deg);
        }
    </style>
</head>
<body>
    <div class="check-style-equal-width"></div>
    <div class="check-style-unequal-width"></div>
    <div class="check-style-select-effect"></div>
</body>
</html>