* {
    box-sizing: border-box;
    -moz-user-select: none;
    -o-user-select:none;
    -khtml-user-select:none;
    -webkit-user-select:none;
    -ms-user-select:none;
    user-select:none;
    -webkit-user-drag: none;
    overflow-x: hidden;
  }
   
  html,body{
    width: 100%;
    height: 100%;
    margin:0px;
    padding:0px;
    font-family: Arial, Helvetica, sans-serif;
  }
  
  body {
    font-family: Arial;
    padding: 10px;
  }
.header {
    background: white;
    margin: 0;
  }
  .topnav {
    overflow: hidden;
    background-color: #696969;
  }
   
  .topnav a {
    float: left;
    display: block;
    color: #f2f2f2;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
  }
   
  .topnav a:hover {
    background-color: #ddd;
    color: black;
  }
  
  .column{
    padding: 20px;
    background: white;
    margin-top: 20px;
  }
  .column:after {
    content: "";
    display: table;
    clear: both;
  }
  .card{
    float: left;
    padding: 20px;
    margin-top: 20px;
    width: 33.33%; 
  }
  img{
      height: 290px;
      width: 100%;
     }
     .column1{
        padding: 20px;
        background: #F5F5F5;
        margin-top: 20px;
      }
      .card1{
        float: left;
        padding: 20px;
        margin-top: 20px;
        width: 33.33%;
        background-color: white;
        height: 270px;
      }
      
      .footer {
        padding: 20px;
        background: #222;
        margin-top: 20px;
      }
      .card2 {
        float: left;
        padding: 20px;
        margin-top: 20px;
        width: 25%;
      }
      @media screen and (max-width: 1200px) {
        .card{   
          width: 100%;
          padding: 0;
        }
        .card1{   
            width: 100%;
            padding: 0;
          }
          .card2{
              width: 100%;
              padding: 0;
          }
        img{
          height: 500px;
        }
      }