      .
  ?

 , , ,   ,  ,     web-. (, <br />  ,     ).        .     "".

 1:
        
<h2 style="background-color:#ff0000;">  HTML</h2>

    ,        ,    .           .     .
   ?

  .      style/.           web-. ,  /background colour:

 2:  
        <html>
           <head>
           </head>
          <body style="background-color:#ff0000;">
          </body>
         </html>

      -  .   ,    .

 ,          , . . color  colour.      ,         -       .        .
   ?

         "#ff0000".      . .   (HEX).     16- .  :

:#ffffff;
 ׸:#000000;()
 :#ff0000;
 :#0000ff;
 :#00ff00;
 Ƹ:#ffff00;

16-     #     .   1000 HEX     ,  HEX-   .       216    :  .

        (white, black, red, blue, green  yellow).

 3:   
      
   <body style="background-color: red;">

   .    .
    ?

      .

  ,  body,     , , ,   br - ,         -  .

  ,    .  ,    -  ,       .  :       -  ,       -  .

    , ,     ,  ,     ,      ,       .

       .
,      ?

     (, p  <p>).  ,     (, <p>),         (, <p style="background-color:#ff0000;">).  .