#reload_captcha {
    width: 250px;
    margin: 5px 0;
    padding: 0.5rem 1rem;
    line-height: 1.2;
    font-size: 0.85rem;
    position: relative;
    text-align: center;
    cursor: pointer;
    transition: 0.1s;
    color: #fff;
    background-color: #8a8a8a;
    border: none;
}

.captcha_div {
    margin:0 auto; max-width: 250px;
}