body {
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  font-family: "Microsoft YaHei";
}

.wrap {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  margin: 0 auto;
  overflow: hidden;
}

.wrap-inner {
  position: absolute;
  overflow-y: scroll;
  overflow-x: hidden;
  left: 0;
  width: 640px;
  height: 100%;
  top: 0;
}

img {
  width: 100%;
  height: 100%;
}