.bby-header {
  justify-content: flex-start;
  align-items: center;
  background-color: #35333e;
}

.bby-header .text {
  font-size: 42px;
  margin: 10px auto;
  color: #fff;
}

.bby-header .text strong {
  font-size: 52px;
 }

@media screen and (max-width: 800px) {
  .bby-header {
    background-color: #fff;
  }
  .bby-header .text {
    font-size: 0;  
    display: none;
  }
  .holder-box {
    display: none;
  }
}

.holder-box {
  height: 80px;
  background-color: #fff;
}
.main-image {
  width: 44%;
  display: block;
}
.main-image:nth-child(2) {
  margin-top: 80px;
}
.jinsuanshi-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-around;
  margin: 90px 0 150px;
}
body {
  background-color: #f4f6f8
}