.main{
  min-height: 50rem;
  width: 90%;
  max-width: 677px;
  margin: 0 auto;
}
.tlt{
  font-size: 22px;
  font-weight: 600;
}
.gjsj{
  margin-top: 1rem;
}
.gjsj p img{
 width: 100%;
}
@media (min-width: 1200px){

}
@media (max-width: 820px){
  
}