python

<! DOCTYPE   html > < html   lang = "en" > < head >      < meta   charset = "UTF-8" >      < meta   name = "viewport"   content = "width=device-width, initial-scale=1.0" >      < title > Document </ title >      < style >          .table-heading {              color : green ;         }          #main-heading {              color : saddlebrown ;         }          .headings {              background-color : black ;              color : aliceblue ;              }          .span {              background-color :  red ;         }      </ style > </ head > < body >      < div   class = "headings" >          < h1   id = "main-heading" > this is heading </ h1 >          < h2 > hello  </ h2 >          < h2 > hello </ h2 >          < h3 > basant </ h3 >          < h4 > yadav </ h4 >      </ div >