/* 隐藏滚动条但保留滚动功能 */
body {
  -ms-overflow-style: none;
  /* IE and Edge */
  scrollbar-width: none;
  /* Firefox */
}
body::-webkit-scrollbar {
  display: none;
  /* Chrome, Safari, Opera */
}

.footer {
  position: relative;
}

.footer .left {
  line-height: 28px;
  width: 550px;
  height: 100px;
  position: absolute;
  bottom: 100px;
  left: 100px;
  font-size: 16px;
  color: #999;
}