body {
    background-image: linear-gradient(rgba(0,0,0,0),rgba(0, 0, 0, 0)), url(pastel.02.jpg);
    height: 100;
    background-size: cover;
    background-position: center;
}

 h1 {font-family: 'arial, helvetica, sans-serif'; 
 background-color:rgb(255, 206, 160);
        margin: auto;
        width: auto;
        border: 3px solid rgb(255, 98, 98);
        padding: 10px;
        text-align: center;} 

        

        * {
          box-sizing: border-box;
        }
        
        
        .column {
          float: left;
          width: 33.33%;
          padding: 10px;
          height: 500px; 
        }
       
        #column4 {
          background-color: #68f7e4;
          width: auto;
        }

     

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