Websites designed for specific topics can use elements that are more in line with the theme of their website. One of these elements is the background. In this code, we have prepared  background websites for children or airlines website. This background is made up of clouds that are constantly moving at the top of the screen. The overall theme of this background is light blue.


HTML
<!-- This script got from www.devanswer.com  -->
<div class="centered">devanswer.com</div><div id="bcl"><a style="font-size:8pt;text-decoration:none;" href="http://www.devanswer.com ">Developers Answer</a></div>
                        

CSS
body{
  height:400px;
  background-color:#BFDFEC;
    background-repeat:repeat-x;
 background-image:url("http://www.devanswer.com/img/cloud.png");
  animation: movement 10s linear infinite; 
}
@keyframes movement{
  0% {
    background-position:0px 0px;
  }
  100%{
    background-position:560px 0px;
  }
}
adiv{
  display:block;
  position:absolute;
  font-size:2rem;
  text-align:center;
  color:white;
  border:1px solid white;
  padding:2rem;
  border-radius:5px;
  margin-left: auto;
  margin-right: auto;
  
}
.centered {
  font-size:2rem;
  text-align:center;
  color:white;
  border:1px solid white;
  padding:2rem;

}