.tablink {
  background-color: #555;
  color: white;
  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 14px 16px;
  font-size: 17px;
  width: 25%;
}

.tablink:hover {
  background-color: #777;
}

.tabcontent {
  color: white;
  /*display: none;*/
  padding: 50px;
  text-align: center;
}

#tab-1 {
  background-color: red;
}

#tab-2 {
  background-color: green;
}

#tab-3 {
  background-color: blue;
}

#tab-4 {
  background-color: orange;
}