html {
  font-size: 10px;
}

body {
  margin: 0;
  padding: 0;
  background-color: #131217;
  font-family: "Microsoft YaHei";
}

#top {
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 5rem;
  z-index: 999;
  max-width: 750px;
}

.container {
  position: relative;
  max-width: 750px;
  margin: 0 auto;
  z-index: 0;
}

.container .downBtn {
  position: absolute;
  top: 27%;
  right: 0;
  left: 0;
  height: 5.45rem;
  cursor: pointer;
}
.container .b2 {
  top: 50%;
}
.container .b3 {
  top: 77%;
}

.container .footer {
  background-color: #942c00;
  margin-top: -1px;
  padding: 15px 15px;
  color: #ffffff;
}
.container .footer a {
  color: #0088eb;
}

.footer p {
  padding: 0;
  margin: 0;
  color: #d9d9d9;
  font-size: 0.9rem;
  line-height: 1.25;
}
@media (min-width: 750px) {
  #top {
    left: 50%;
    margin-left: -375px;
  }
}