• HTML
• CSS

HTML

<h1>Código Front-End</h1>

<!--
    fuente:https://www.youtube.com/watch?v=VBnj4Uc0E2Y
-->

CSS

body{
    background:url("https://compositu.com/template/web/img/extra/desk_3.jpeg") no-repeat center center fixed;
    background-size:cover;
    -webkit-background-size:cover;
    -moz-background-size:cover;
    -o-background-size:cover;
}
h1{
    color:#fff;
}