.leistungen {
  background-color: #ffffff;
  font-family: 'PT Sans', sans-serif;
  font-size: 16px;
  padding-left: 3%;
  padding-right: 3%;
  padding-top: 10px;
  padding-bottom: 20px;
  width: 100%;
  margin-left: auto;
  margin-right: auto;
  margin-top: 20px;
  margin-bottom: 20px;
  display: none;
}
.leistungen h1{
  margin-top: 0px;
  margin-bottom: 20px;
}
.thumbnail {
  border: none;
}
@media (max-width: 768px) {
  .leistungen {
    width: 100%;
  }
  