img{max-width:100%;border:0px solid #ccc;}.m-kf{position:fixed;z-index:99999;right:0px;top:30%;}.m-kf .kf-item{display:block;line-height:0;font-size:0;margin-bottom:1px;background-color:#d8d8d8;}.m-kf .kf-wx{position:absolute;display:none;bottom:0;right:53px;width:90px;}@media screen and (max-width:767px){.m-kf{right:0;top:auto;bottom:0;display:-webkit-box;display:-webkit-flex;display:-moz-box;display:-ms-flexbox;display:flex;-webkit-box-orient:horizontal;-webkit-box-direction:normal;-webkit-flex-flow:row nowrap;-moz-box-orient:horizontal;-moz-box-direction:normal;-ms-flex-flow:row nowrap;flex-flow:row nowrap;-webkit-justify-content:space-around;-ms-flex-pack:distribute;justify-content:space-around;width:100%;background-color:#d8d8d8;}.m-kf .kf-item{width:20%;text-align:center;background-color:#d8d8d8;}.m-kf .kf-wx{bottom:100%;left:0;}.g-ft{padding-bottom:63px;}}@media screen and (max-width:959px){.returntop{right:0;bottom:65px;width:36px;height:36px;}}
img{display: inline-block;vertical-align: top;max-width: 100%;height: auto; aspect-ratio: auto;box-sizing: border-box; min-height: 10px}
*{
    font-display: optional;
}
div{min-height: 1px}

img,
input[type='image'],
video,
embed,
iframe,
marquee,
object,
table {
    aspect-ratio: attr(width) / attr(height);
}