body{
  margin:0;
  background:darkgray;
  overflow:hidden;
  display:flex;
  justify-content:center;
  align-items:center;
}

#verticalButtons{
  display:flex;
  flex-direction:column;
}

button{
  border: none;
  border-radius: 5px;
  padding: 5px 5px 7px 5px;
  margin: 2px;
  cursor:pointer;
}
button:hover{
  background:blue;
}

#networkCanvas{
  background:black;
}
#carCanvas{
  background:lightgray;
}