body {
    background: #e7f6fa;
}
form {
    margin-top: 50px;
    padding: 20px;
    background-color: #fdfcfc;
    border-radius: 3px;
    box-shadow: 0px 2px 20px #808080;
}
.code-input {
    width: 50px;
    height: 60px;
    text-align: center;
    font-size: 24px;
    margin: 0 5px;
    border: 1px solid #cbe6fa;
    border-radius: 5px;
}