.hidden {
    display:none;
}

.captcha{
    position: fixed;
    z-index: 9999999;
    top: 50%;
    left: 40%;
    right: 40%;
    border: solid 2px #da820e;
    background-color: white;
}

.captcha input[type="submit"]{
    float: right;
}

@media (max-width: 979px) {
    .captcha{
        left: 10%;
        right: 10%;
    }
  }