.popup-close {
    width: 34px;
    height: 34px;
}

.popup-close div {
    width: 100%;
    height: 100%;
    background-image: url('https://m.airchina.com.cn/ac/assets/iN/booking/close.png');
    background-size: 11px 11px;
    background-position: center;
    background-repeat: no-repeat;
}

.popup-msg {
    padding: 0 20px 18px;
    font-size: 13px;
    line-height: 18px;
}

.popup-btn {
    border-top: 1px solid #D9D9DC;
    color: #107AEE;
    display: flex;
    justify-content: space-between;
}

.popup-btn > div {
    width: 50%;
    height: 44px;
    line-height: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.popup-btn > div:nth-last-child(1) {
    border-left: 1px solid #D9D9DC;
}