.captcha .spinner input[type="checkbox"] {
    display: none;
}

.captcha .spinner .checkmark {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #ccc;
    border-radius: 4px;
    position: relative;
    margin-right: 10px;
    background-color: #fff;
    vertical-align: middle;
}

.captcha .spinner .checkmark span {
    display: none;
    position: absolute;
    top: 0;
    left: 4px;
    font-size: 16px;
    color: #fff; /* ✅ Tick color */
    font-weight: bold;
}

.captcha .spinner input[type="checkbox"]:checked + .checkmark span {
    display: block;
    content: '\2714'; /* Unicode checkmark ✓ */
}