.header_container{
  width: 100%;
  height: 70px;
  background-color: #163d64;
  color: #F5F5F5;
  line-height: 70px;
  padding: 0 40px;
  box-sizing: border-box;
  font-size: 32px;
  text-align: center;
  font-weight: bold;
}

.header_container .back{
  font-size: 40px;
  color: #F5F5F5;
}

.header_container .back{
  float: left;
}

.header_container .home{
  width: 38px;
  height: 34px;
  float: right;
  margin-top: 18px;
}