.m-drop {
  background: rgba(255, 255, 255);
}

.m-drop {
  display: block;
}

.m-htfb .drop-bd {
  height: 100%;
}

.header p {
  text-align: center;
  font-size: .9rem;
  font-weight: bold;
  line-height: 2.4rem;
}

.go_back {
  position: absolute;
  top: .8rem;
  left:0rem;
  width: 1rem;
  height: 1rem;
  background-image: url("https://www.techknowledgi.com/style/images/arrow.png");
  background-repeat: no-repeat;
  background-size: 100%;
  transform:rotate(90deg);
}