.container1 {
  overflow: hidden;
}

.filterDiv {
  float: left;
  background-color: #2196F3;
  color: #ffffff;
 /* width: 100px;*/
  line-height: 100px;
  text-align: center;
  margin: 2px;
  display: none; /* Hidden by default */
}

/* The "show" class is added to the filtered elements */
.show {
  display: block;
}

/* Style the buttons */
.btn {
  border: none;
  outline: none;
  padding: 12px 16px;
  background-color: #f1f1f1;
  cursor: pointer;
}

/* Add a light grey background on mouse-over */
.btn:hover {
  background-color: #ddd;
}

/* Add a dark background to the active button */
.btn.activo {
  background-color: #666;
  color: white;
}