.topic{
  text-align: center;font-size: 40px;border-radius:15px; padding: 15px 16px;background: rgba(196, 196, 196, 0.39); width:529px; 
}
.column{
  
    border: 1px black;
    width:25%;
    min-height: 400px;
    float: left;
    margin-left: 0.5%;
    text-align: center;
    flex: 1 1 300px;
    /* padding: 15px 16px; */
    margin-top: 15px;
    max-width:400px;
    background-color:rgba(113, 113, 113, 0.34);
    text-decoration: none;
  }
  
  .row{
    display: flex;
    flex-wrap: wrap;
    text-align: center;
    justify-content: center;
  }
  .head{
    font-size: 26px;
    font-family:'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    color: rgb(255, 255, 255);
    background-color: #717171;
    width: 100%;
  }
  .title{
    padding-top:15px ;
    font-size: 18px;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
    color: black;
    padding: 15px 16px;
    text-align: left;
   
    
  }
  .column:hover{
    transform: scale(1.05);text-align: center;font-size: 40px;border-radius:15px; padding: 15px 16px;background: rgba(196, 196, 196, 0.39); width:529px; 
  }
  @media screen and (max-width:780px){
      .column{
          max-width: 400px;
          flex: 1 1 500px;
          min-height: 550px;
          margin-top: 5%;
        }
        .head{
            font-size: 26px;
        }
        .title{
            font-size: 20px;
        }
        .row{
            justify-content: center;
        }
        .topic{
          width:90%;
        }
  }