.feedback_pic {
  height: 400px;
  border-radius: 6px;
}
.feedback_pic .mailbox_svg {
  position: absolute;
  top: 25%;
  left: -15%;
  width: 320px;
  height: 320px;
  z-index: 10;
  opacity: 0.5;
}
.feedback_pic .mailbox_svg img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  -o-object-position: center;
     object-position: center;
  -webkit-transform: rotate(26deg);
          transform: rotate(26deg);
}
.feedback_pic .bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  -o-object-position: center;
     object-position: center;
  z-index: 1;
}
@media (min-width: 1200px) {
  .feedback_pic {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
  }
}
@media (max-width: 768px) {
  .feedback_pic {
    height: 300px;
  }
}

.article_subTitle, .article_subTitle-b {
  line-height: 1.4em !important;
}