body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background-color: #bbb;
}

.topnav {
  overflow: hidden;
  background-color: #333;
}

.topnav a {
  float: left;
  color: #f2f2f2;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
}

.topnav a:hover {
  background-color: #ddd;
  color: black;
}

.topnav a.active {
  background-color: #4CAF50;
  color: white;
}

::-webkit-scrollbar-button{ display: none; height: 13px; border-radius: 0px; background-color: #AAA; } ::-webkit-scrollbar-button:hover{ background-color: #AAA; } ::-webkit-scrollbar-thumb{ background-color: #50c300; border-radius: 5px; } ::-webkit-scrollbar-thumb:hover{ background-color: #104111; border-radius: 5px; } ::-webkit-scrollbar-track{ background-color: #efefef; } ::-webkit-scrollbar-track:hover{ background-color: #CCC; } ::-webkit-scrollbar{ width: 13px; }