.main .nav a:nth-child(7) {
  padding-bottom: 0.0625rem;
  border-bottom: 0.06rem solid #004098;
  color: #004098;
}

.maintenance .left-son {
  display: flex;
  margin-bottom: 0.3rem;
}

.maintenance .left-son p {
  flex: 1;
  font-size: 0.33rem;
  margin: auto 0;
  line-height: 1rem;
}

.maintenance .left-son i {
  display: inline-block;
  width: 0.375rem;
  height: 0.375rem;
  border-radius: 50%;
  background-color: #004098;
  margin-right: 0.1875rem;
  margin-top: 0.3rem;
}

.maintenance .box {
  width: 75%;
  
  margin: 0 auto;
  display: flex;
  margin-bottom: 1rem;
}

.maintenance .box .son {
  width: 47%;
  height: 7rem;
}

.maintenance .box .son img {
  width: 100%;
  height: 100%;
}

.maintenance .box .son2 {
  flex: 1;
  height: 7rem;
  padding: 0.5rem;
  border-top-right-radius: 0.3125rem;
  border-bottom-right-radius: 0.3125rem;
  background:linear-gradient( 45deg,#b2ccf0,#c7dcfb,#b2ccf0);
}

.maintenance .box .son2 h1 {
  font-size: 0.45rem;
  padding-bottom: 0.5rem;
}

.maintenance .box:nth-child(3) .son2 {
  border-radius: 0.3125rem;
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
} 

@media only screen and (max-width: 1280px) and (min-width: 768px) {
  .maintenance .box {
    flex-direction: column;
    align-items: center;
  }

  .maintenance .box .son,
  .maintenance .box .son2 {
    width: 75%;
    margin-bottom: 1rem;
    border-radius: 0.3125rem !important;
    height: auto;
  }
}

@media screen and (max-width: 768px) {
  .maintenance .box {
    flex-direction: column;
    align-items: center;
  }

  .maintenance .box .son,
  .maintenance .box .son2 {
    width: 75%;
    margin-bottom: 1rem;
    border-radius: 0.3125rem !important;
    height: auto;
  }
}