body{Background-color: white; margin: 0; padding: 10; } 
   #centr {width:1100px; border: 0px solid red}
   #hlavicka {border: 0px solid green; text-align: left;}
   #obsah {border: 0px solid blue; Background-color: white; color: black;  font-size: 16px; text-align: left;}
   .volno {Background-color: lime; width:20px; color: black; text-align: center;}
   .obsazeno {Background-color: red; width:20px; color: black; text-align: center;}
   .blokovano {Background-color: silver; width:20px; color: black; text-align: center;}
   a { padding: 0.3em 1em 0.3em 1em; border: outset 0.5em; font-weight: bold; text-decoration: none }
   a:link, a:visited { background: #000080; color: #fff }
   a:hover { background: #00f; color: #ff0; border: inset 0.5em }
   .budova {padding: 0px 0px 0px 3px}