.frm_math_input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    max-width: 150px;
    margin-top: 5px;
    display: block;
    color: #333;
}

.sf_captcha_refresh_btn {
    font-size: 26px;
    font-weight: bold;
    color: #9b51e0;
    transition: transform 0.3s ease, color 0.3s ease;
    border: none;
    background: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
}

.sf_captcha_refresh_btn:hover {
    color: #8339c9;
    transform: rotate(180deg);
    background-color: #f6f3fb;
}

.sf_captcha_refresh_btn:active {
    transform: scale(0.9) rotate(180deg);
}