.main {
  padding: 20px;
  margin-top: 55px;
}

.topnav {
  overflow: hidden;
  background-color: #e9e9e9;
}

.topnav a {
  float: left;
  display: block;
  color: black;
  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: #2196f3;
  /* color: blueviolet; */
  width: 290px;
  font-size: larger;
  font-weight: 600;
}

.topnav .search-container {
  float: right;
}

.topnav input[type="text"] {
  padding: 6px;
  margin-top: 8px;
  font-size: 17px;
  border: black;
}

.topnav .search-container button {
  float: right;
  padding: 6px 10px;
  margin-top: 8px;
  margin-right: 16px;
  background: #ddd;
  font-size: 17px;
  border: none;
  cursor: pointer;
}

.topnav .search-container button:hover {
  background: blue;
}

@media screen and (max-width: 600px) {
  .topnav .search-container {
    float: none;
  }
  .topnav a,
  .topnav input[type="text"],
  .topnav .search-container button {
    float: none;
    display: block;
    text-align: left;
    width: 100%;
    margin: 0;
    padding: 14px;
  }
  .topnav input[type="text"] {
    border: 1px solid #ccc;
  }
}
.col-md-6 {
  margin-top: 15px;
}
