.tab {
  overflow: hidden;
}

.tab button {
  float: left;
  cursor: pointer;
  font-size: 1rem;
  color: black;
  padding: 0.5rem;
}

.tab button.active {
  background-color: grey;
  color: white
}

.tabcontent {
  padding: 0.5rem 1rem;
  border: 1px solid #ccc;
}

.tabcontent_invest {
  display: none;
  padding: 0.5rem 1rem;
  border: 1px solid #ccc;
}

.hide {
  display: none;
}

th {
  width: 100px;
}

.container_material {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}

.materialUnze {
  display: flex;
  flex-direction: column;
  width: 25%;
  align-items: center;
}

@media (max-width: 768px) {
  .materialUnze {
    width: 50%;
  }
}