* {
  margin: 0;
  padding: 0;
}
html,
body {
  width: 100%;
  height: 100%;
  background-color: #040000;
}
.content {
  position: relative;
  width: 100%;
  height: 100%;
  background:
  url(http://pubweb.oss-cn-hangzhou.aliyuncs.com/WebStatic%2Fmingming%2Flogo.png) center 30% no-repeat,
  url(http://pubweb.oss-cn-hangzhou.aliyuncs.com/WebStatic%2Fmingming%2Fbj.jpg) center center no-repeat;
  background-size: 70%,100% 100%;
}
.footer {
  width: 6rem;
  position: absolute;
  left: calc(50% - 3rem);
  bottom: 3rem;
}