.callout {
  position: fixed;
  bottom: 35px;
  right: 20px;
  margin-left: 20px;
  max-width: 300px;
}

.callout-header {
  padding: 10px 6px;
  background: #000;
  font-size: 0px;
  color: black;
}

.callout-container {
  padding: 15px;
  background-color: #ccc;
  color: black
}

.closebtn {
  position: absolute;
  top: 5px;
  right: 15px;
  color: white;
  font-size: 30px;
  cursor: pointer;
}

.closebtn:hover {
  color: lightgrey;
}
  

  .w3-sidebar {
  z-index: 3;
  width: 250px;
  top: 43px;
  bottom: 0px;
  height: ;
  }

  .navbar {
    font-family: inherit, sans-serif;
    margin-bottom: 0;
    background-color: #000000;
    border: 0;
    font-size: 15.3px !important;
    letter-spacing: 4px;
    opacity: 0.9;
  }
  .navbar li a, .navbar .navbar-brand { 
    color: #ffffff !important;
  }
  .navbar-nav li a:hover {
    color: #d5d5d5 !important;
  }
  .navbar-nav li.active a {
    color: #fff !important;
    background-color: #000000 !important;
  }
  .navbar-default .navbar-toggle {
    border-color: transparent;
  }

  .open .dropdown-toggle {
    color: #fff;
    background-color: #555 !important;
  }
  .dropdown-menu li a {
    color: #000 !important;
  }
  .dropdown-menu li a:hover {
    background-color: red !important;
  }
  footer {
    background-color: #000000;
    color: #ffffff;

  }
  footer a {
    color: #f5f5f5;
  }
  footer a:hover {
    color: #777;
    text-decoration: none;
  }

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child), .dropdown .dropbtn {
    display: none;
  }
  .topnav a.icon {
    float: right;
    display: block;
  }
}

@media screen and (max-width: 600px) {
  .topnav.responsive {position: relative;}
  .topnav.responsive .icon {
    position: absolute;
    right: 0;
    top: 0;
  }
  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }
  .topnav.responsive .dropdown {float: none;}
  .topnav.responsive .dropdown-content {position: relative;}
  .topnav.responsive .dropdown .dropbtn {
    display: block;
    width: 100%;
    text-align: left;
  }
}


img {
  max-width: 100%;
  height: auto;
}

div.gallery {
  border: 1px solid #ccc;
}

div.gallery:hover {
  border: 1px solid #777;
}

div.gallery img {
  width: 100%;
  height: auto;
}

div.desc {
  padding: 15px;
  text-align: center;
}

* {
  box-sizing: border-box;
}

.responsive {
  padding: 0 6px;
  float: left;
  width: 12.49999%;
}

@media only screen and (max-width: 700px) {
  .responsive {
    width: 24.99999%;
    margin: 6px 0;
  }
}

@media only screen and (max-width: 500px) {
  .responsive {
    width: 100%;
  }
}

.clearfix:after {
  content: "";
  display: table;
  clear: both;
}