index.css

body {
  background-color: rgb(78, 33, 17);
}
.midAutumnBg {
  width: 10rem;
  height: 17.093rem;
  position: relative;
  font-size: 0;
  margin: 0 auto;
  overflow: auto;
  background: url(../images/static.png) no-repeat;
  background-size: 100% 100%;
  z-index: 99;
}