.validation-code{
    text-align: center;
}

.validation-code ol{
    padding: 0;
    list-style: none;
}

.validation-code h4{
    background: rgba(0,0,0,.3);
    color: #fff;
    padding: 20px 40px;
    display: inline-block;
    font-size: 32px;
}