.ajax:before{
    position: absolute;
    content: '';
    display: flex;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background-color: #fff;
    opacity: 0.6;
    z-index: 999;
    cursor: wait;
}
.ajax_box {
    display: flex;
    justify-content: center;
    align-items: center;
}
.ajax_error{
    color: red;

}
.ajax_success{
    color: green;
}