how to set background color and background image in html code example

Example 1: html watermark background

#watermark {
   position:fixed;
   bottom:5px;
   right:5px;
   opacity:0.5;
   z-index:99;
   color:white;
   user-select: none;
}

Example 2: how to set div background image

body {
 background-image: url("paper.gif");
 background-color: #cccccc;
}