body {
    background:#121212;
    color:white;
    font-family:Arial;
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
}
.box {
    text-align:center;
}
input, button {
    padding:10px;
    margin:6px;
}
.sos {
    background: white;
    color:white;
    font-size:20px;
}
#error {
    color:red;
}