html {
  font-size: 16px;
  font-family: "Open Sans", sans-serif;
}
        body {background-color: #242833;}
        .barra {width: 100%;}
        .boxes {width: 100%; display: flex;}
        .leftbox {
            float: left;
            width: 31%;
            height: auto;
            text-align: center;
        }

        .middlebox {
            float: left;
            width: 32%;
            height: 100%;
            text-align: center;
        }

        .rightbox {
            float: right;
            width: 31%;
            height: 280px;
            text-align: center;
        }

        h1, h2 {
            color: #fff;
            text-align: center;
            padding: 25px 0;
        }