background image in css

background-image: url("image.gif");body {

 background-image: url("paper.gif");

 background-color: #cccccc;

} 
 body {
 background-image: url("paper.gif");
 background-color: #cccccc;
}html,body {
  background-image: url("your.picture");
}.selector {
  background-image: url(image.png);
}<!-- Background images are better implemented in CSS -->
<!-- but here is how you could do it in HTML in a pinch -->

<head>
  <style>
    .background {
      background-image: url(https://cleananddelicious.com/wp-content/uploads/2016/03/Avocad0-CD.jpg);
    }
  </style>
</head>

<body>
  <div class=background>
    <h1>The background of this div will be an avocado</h1>
  </div>
</body>