@media screen and ( max-width:768px ) {

.main_img_wrapper{
 margin-top: 20px;
}

.main_img_wrapper .main_title{
  width: 100%;
  text-align: center;
  color: #000000;
  font-size: 20px;
}

.main_img_wrapper span{
  font-size: 30px;
}

.page_notfound{
 margin-top: 30px;
}

.page_notfound .page_sub{
  margin-top: 0px;
  font-size: 16px;
}

.page_notfound .page_doc{
  text-align: left;
  margin-top: 10px;
}

}