.container {
    font-size: 16px;
    display: flex;
    justify-content: center;
}
.layui-form {
    width: 400px;
    margin-top: 40px;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 3px 18px rgba(100, 0, 0, 0.5);
}
.demo-reg-container {
    width: 320px;
    margin: 21px auto 0;
}
.demo-reg-other .layui-icon {
    position: relative;
    display: inline-block;
    margin: 0 2px;
    top: 2px;
    font-size: 26px;
}