body 
{
    background-image: url(webimage/gradient_x.jpg); /** Link to the image you created **/        
    background-repeat:no-repeat;  /** Repeats the image vertically **/        
    background-position: center top ; /** Centers the Background image **/        
    background-color: #ffffff; /** Website BG colour (matches canvas colour in Step 1) #f7f4ee **/
}


#contenedor 
{
    width: 990px;        
    margin: 0 auto;        
    text-align: center;
}