.pm_ai {
    display: none;
    position: fixed;
    left: 0;
    right: -1300px;
    top: 0;
    width: 1px;
    height: 100%;
    margin: 0 auto;
    z-index: 99999;
}

.pm_ai_box {
    position: absolute;
    width: 375px;
    height: 650px;
    right: -10px;
    bottom: 14%;
    background: #fff;
    border-radius: 5px;
    box-shadow: 0 0 5px #333;
}

.pm_ai_box_content {
    width: 100%;
    height: 100%;
    position:relative;
}

.pm_ai_box_content iframe {
    width: 100%;
    height: 100%;
    border: none;
    outline: none;
    border-radius: 5px;
}

.pm_ai_box_content span {
    position:absolute;
    right:10px;
    top:10px;
    cursor:pointer;
}

.pm_ai_box_content span img {
    width:23px;
}

@media screen and (max-width: 1400px) {
    .pm_ai_box {
        position: fixed;
        right: 80px;
    }
}