.topics-content {
  line-height: 25px;
  padding: 20px;
  margin: 20px;
}
.topics-back {
  margin-bottom: 100px;
}
@media screen and (max-width: 768px) {
  .topics-content {
    padding: 0 0;
    margin: 20px 0;
  }
  .topics-back {
    margin-bottom: 30px;
  }
}