.tabcontainer {
  width: 100%;
}
.tabcontainer .buttoncontainer {
  height: 15%;
}
.tabcontainer .buttoncontainer button {
  width: 20%;
  height: 100%;
  float: left;
  border: none;
  outline: none;
  cursor: pointer;
  padding: 10px;
  font-family: sans-serif;
  font-size: 18px;
  background-color: #eee;
}
.tabcontainer .buttoncontainer button:hover {
  background-color: #009dff;
  border-radius: 30px;
}
.tabcontainer .tabpanel {
  color: white;
  text-align: center;
  padding-top: 50px;
  box-sizing: border-box;
  font-family: sans-serif;
  font-size: 22px;
  display: none;
}