.fj {
  width: 76.5%;
  height: 100px;
  background: #a4b0be;
  position: absolute;
  top: 640px;
  display: flex;
  background-image: url(../Img/未标题-1.jpg);
  background-size: cover;
  background-attachment: fixed;
  background-repeat: no-repeat;
}

@media (max-width: 800px) {
  .fj {
    background-image: url(../Img/111.jpeg);
    background-size: contain;
    background-color: rgb(56, 110, 177);
  }
}
@media (max-width: 565px) {
  .fj {
    flex-direction: column;
  }
}
@media (min-width: 1180px) {
  .fj {
    width: 902px;
  }
}

@media (max-width: 450px) {
  .fj {
    top: 620px;
  }
}