.navbar {
  z-index: 9999;
  overflow: hidden;
  background-color: #ffffff;
  position: fixed;
  top: 0;
  width: 100%;
}

.navbar a {
  float: left;
  display: block;
  color: #000000;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
  font-size: 17px;
  border: 0;
}

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

.topnav-right {
  float: right;
}

@media only screen and (max-width: 600px) {
  .main {
    margin-top: 50px;
  }
}