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

.leftColumn {
   width: 25%;
   padding: 10px;
}

.centerColumn {
   width: 50%;
   padding: 10px;
   display: inline-block;
   text-align: left;
}

.rightColumn {
   width: 25%;
   padding: 10px;
}
.row {
   text-align: center;
}

body {
   font-size: 125%;
   background-color: #efefef;


}

@media screen and (max-width: 600px) {
    .leftColumn {
      width: 0%;
    }

    .centerColumn {
      width: 100%;
    }

    .rightColumn {
      width: 0%;
    }

    center img {
      width: 100%;
    }
}