.page-content .item-center {
    margin: 0 auto;
}

#register-form-group {
    height: 50px;
    appearance: menulist;
    -webkit-appearance: menulist;
}

.custom-file {
    height: 50px;
    overflow: hidden;
}

.custom-file-input {
    height: 50px;
}

.custom-file-label {
    height: 50px;
    line-height: 2.2;
}

.custom-file-label::after {
    height: initial;
    line-height: inherit;
    content: "选择"
}