header, footer, nav, section, article, aside {
        display: block;
}
body {
        background-image: url("appl.gif");
}
div {
        width: 50%;
        margin: 0 auto;
}
form {
        height:500px
        width: 500px;
        margin: 1em;
        background-color: rgba(0,0,0,0.5);
        border: 2px solid red;
        border-radius: 20px;
        padding: 10px;
        color: white;
        text-align: center;
}
input#fileselect {
        padding: 12px 20px;
        margin: 8px 0;
        box-sizing: border-box;
        color: white;
}