.beian {
  width: 100%;
  /* height: 50px; */
  line-height: 78px;
  background-color: black;
}
.ba_main {
  width: 1000px;
  /* height: 50px; */
  line-height: 78px;
  margin: auto;
}
.balist {
  display: inline-block;
  /* width: 33%; */
  /* margin-top: 15px; */
  color: white;
  text-align: center;
}
.balist:nth-child(2) {
  margin-left: 5%;
}
.balist:nth-child(3) {
  margin-left: 5%;
}
.ba_main {
  font-size: 14px;
}
.ba_main {
  /* font-size: 8px; */
  line-height: 60px;
  display: flex;
  justify-content: center;
}

@media (max-width: 640px) {
  .body .beian .ba_main {
    display: block;
  }
}

@media (min-width: 1200px) and (max-width: 1530px) {
  .beian {
    height: 60px;
  }
  .ba_main {
    font-size: 12px;
    line-height: 60px;
    display: flex;
    justify-content: center;
  }
}

@media (width: 640px) {
  .ba_main {
    width: 600px;
  }
}
@media (max-width: 1000px) {
  .ba_main {
    width: 100%;
  }
}