.row:after {
  content: "";
  display: table;
  clear: both;
}
  
  .centercolumn{
    float: center;
    width: 70%;
    background-color: #f1f1f1;
   padding-left: 5px;
   margin-left: 15%;
   margin-right: 15%;
  }
  .leftcolumn {   
  float: left;
  width: 15%;
  background-color: #f1f1f1;
  padding-left: 5px;
   padding-right: 5px;
}

/* Right column */
.rightcolumn {
  float: right;
  width: 15%;
  background-color: #f1f1f1;
  padding-right: 5px;
  padding-left: 5px;
}
    .footer {
  padding: 1px;
  text-align: center;
  background: #f1f1f1;
  margin-top: 1px;
}
  .card {
  background-color: white;
  padding: 10px;
  margin-top: 5px;
  margin-right: 5px;
  margin-button: 5px
  
}

div {
font-family:courier;
}





.button {
  background-color: #4CAF50;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 14px;
  margin: 4px 2px;
  cursor: pointer;
}




* {
  box-sizing: border-box;
}

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


/* Style the header */
.header {
  background-color: #f1f1f1;
  padding: 20px;
  text-align: center;
}

/* Style the top navigation bar */
.topnav {
  overflow: hidden;
 /* background-color: #1E90FF;*/
    border-radius: 5px;
}

/* Style the topnav links */
.topnav a {
  float: left;
  display: block;
  color: #ADFF2F;
  text-align: center;
  font-size: 20px;
  font-weight: bold;
    padding: 14px 14px;
  text-decoration: none;
}

/* Change color on hover */
.topnav a:hover {
  background-color: #ddd;
  color: black;
}
.dropdown {
  float: left;
  overflow: hidden;
}

.dropdown .dropbtn {
  font-size: 20px;  
  font-weight: bold;
    border: none;
  outline: none;
  color: #FF7F50;
  padding: 14px 14px;
  background-color: inherit;
  font-family: inherit;
  margin: 0;
}

.navbar a:hover, .dropdown:hover .dropbtn {
  background-color: red;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown-content a {
  float: none;
  color: black;
  padding: 12px 16px;
  text-decoration: none;
  display: block;
  text-align: left;
}

.dropdown-content a:hover {
  background-color: #ddd;
}

.dropdown:hover .dropdown-content {
  display: block;
}

        
        /* On screens that are 600px wide or less, make the menu links stack on top of each other instead of next to each other 
@media screen and (max-width: 600px) {
  .topnav a {
    float: none;
    width: 100%;   */   
  body {
  font-family: "Lato", sans-serif;
}

.sidenav {
  height: 95%;
  width: 0;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #111;
  overflow-x: hidden;
  transition: 0.3s;
  padding-top: 20px;
}

.sidenav a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 25px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

.sidenav a:hover {
  color: #f1f1f1;
}

.sidenav .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}


      
      @media screen and (max-width: 800px) {
  .leftcolumn, .rightcolumn {   
    width: 100%;
    padding: 0;
          }
          .topnav a {
    float: none;
    width: 100%; 
}
          .sidenav {padding-top: 15px;}
            .sidenav a {font-size: 18px;}
}

div {
font-family:courier;
}