* {box-sizing: border-box;}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

.header{
  background: grey;
  text-align: center;
}
.footer{
  background: #e9e9e9;
  text-align: center;
  margin-bottom: 10px;
}
.listing_content{
  margin: 1em;
}

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

.topnav a {
  float: left;
  display: block;
  color: black;
  text-align: center;
  padding: 20px 16px;
  text-decoration: none;
  font-size: 17px;
}

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

.topnav a.active {
  background-color: #2196F3;
  color: white;
}

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

.topnav input[type=text] {
  padding: 9.5px;
  margin-top: 0px;
  margin-left: 20px;
  font-size: 17px;
  border: none;
}

.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: #ccc;
}

.btn-search {
    width: 50px;
    height: 45px;
    margin-top: 5px;
    padding: 5px;
    margin: 10px;
    margin-left: 1px;
    background: #2196F3;
    color: white;
    font-size: 17px;
    border: 1px solid grey;
    border-left: none;
    cursor: pointer;
}

.btn-search:hover {
    background: #0b7dda;
}
.btn{
  margin-top: 2px;
}

@media screen and (max-width: 930px) {
  .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 a{
    text-align: center;
  }
  .topnav input[type=text] {
    border: 1px solid #ccc;
  }
  .topnav{
    text-align: center;
  }
  .btn-search {
    border-left: 1px solid grey;
  }
}
.table-scroll{
  overflow: auto;
}