body, html      {
                height: 100%;
                }

.bg             {
                /* The image used */
                background-image: url("../imagens/FundoEdiMail.jpeg");

                /* Full height */
                height: 100%;

                /* Center and scale the image nicely */
                background-position: center;
                background-repeat: no-repeat;
                background-size: cover;
                }