body {
    margin: 0; 
    padding: 0;
    text-align: center;
    font-size: medium;
}

.box {
    width: 25%;

    /* height: 40%; */
    margin-top: 15%;
    margin-bottom: 15%;
    margin-left: auto;
    margin-right: auto;
    scale: 3;
}

#captcha {
    margin-top: 1%;
    margin-bottom: 1%;
}