/* Main container */
.container {
  width: 900px;
  margin: 0px auto;
  background-color:#ff0000;
  /*border:3px solid #eee;*/
   /*display:table; must put this in for FireFox. */
 

}

.column {
  float: left;
}

/* header and footer*/
.header  { width: 900px;}
.footer { width: 900px;}

/* middle content box with left and right column*/
.mid  { width: 900px;  background-image:url(../images/sfondo_pagina.jpg);}

/* Content Column*/
.content_column  { width: 500px;}

/* left and right Columns*/
.sidebar_left  { width: 200px;  }
.sidebar_right { width: 200px; }