.popup_help {
    display: none;
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    max-width: 300px;
    z-index: 20;
    background-color: #FFF;
    margin: auto;
    padding: 50px 20px 30px;
    text-align: center;
}

.popup_help button:first-child {
    position: absolute;
    right: 10px;
    top:10px;
    background: none;
    border: none;
}
#link_order .popup_help button.close img {
    height: 25px;
}

.popup_help button {
    cursor: pointer;
}