.sn-label {
    display: block;
    margin: 10px;
    font-size: 16px;
}
.sn-input {
    padding: 5px 10px;
    margin-left: 25px;
    width: 400px;
    border-radius: 5px;
}
.sn-tip {
    display: inherit;
    margin-left: 85px;
    font-size: 11px;
    color: #999;
}