body {
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}

.home-bg{
    background-image: url('pics/construction.jpg');
}

div.display-middle {     
    text-align: center;
    margin-top: 15%;
    /* Box */
    border: 1px solid black;
    background-color: rgba(245, 245, 245, 0.5);
    padding-top: 2em;
    padding-right: 2em;
    padding-bottom: 2em;
    padding-left: 2em;
}