TO give margin and padding as zero in HTML Page

by Ishank Dubey

HTML

<div class='papa'>
<span>ishank</span>
  
</div>

CSS

body, html{
  background-color:green;
  padding:0;
  margin:0;
},
*{
  box-sizing:border-box;
}
.papa{
  height:100%;
  background-color:red;
  margin:0px;
  float:left;
  width:100%;
}