Custom Checkbox

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Custom Checkbox</title>
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Rubik&display=swap" rel="stylesheet">
    <style>
        * {
            margin: 0;
            padding: 0;
            font-family: 'Rubik', sans-serif;
        }

        body {
            background-color: #383838;
        }

        section {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            height: 100vh;
        }

        ul li {
            list-style: none;
            margin: 20px 0;
        }

        input[type=checkbox] {
            appearance: none;
            width: 25px;
            height: 25px;
            background-color: #fff;
            border-radius: 4px;
            display: inline-block;
            vertical-align: middle;
            position: relative;
            transition: 0.3s all ease-in-out;
            cursor: pointer;
        }

        input[type=checkbox]:checked {
            background-color: #fc5000;
        }
        
        input[type=checkbox]::before {
            position: absolute;
            content: '\2713';
            font-size: 50px;
            line-height: 15px;
            color: #fff;
            transform: scale(0);
            transition: 0.3s all ease-in-out;
        }

        input[type=checkbox]:checked::before {
            transform: scale(1);
        }

        label {
            font-size: 20px;
            color: #fff;
            display: inline-block;
            vertical-align: middle;
            margin-left: 5px;
            cursor: pointer;
        }
        
    </style>
</head>
<body>
    <section>
        <ul>
            <li>
                <input type="checkbox" name="" id="check1" />
                <label for="check1">
                    Frontend Dev
                </label>
            </li>

            <li>
                <input type="checkbox" name="" id="check2" />
                <label for="check2">
                    Backend Dev
                </label>
            </li>

            <li>
                <input type="checkbox" name="" id="check3" />
                <label for="check3">
                    Full Stack Dev
                </label>
            </li>
        </ul>
    </section>
</body>
</html>
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Result Screenshot(s)

Custom CheckboxWorking Sample0