body {background: none; margin: 0% 0%}

#blok {background-color: white; border: 1px solid white; width: 21cm; margin-top: 15px; margin-bottom: 15px; 
font-family: tahoma; font-size: 16px; color: black; font-weight: normal; text-align: center; overflow: hidden}

#box {background-color: none; border-bottom: 3px solid silver; width: 17.5cm; margin-top: 2px; margin-bottom: 5px; margin-left: 3cm;  
      font-family: tahoma; font-size: 16px; color: black; font-weight: normal; text-align: justify; padding: 2px; float: clear; overflow: hidden} 
      
#clanek {background-color: none; border: 0px solid silver; width: 21cm; margin-left: 2cm;   
      font-family: tahoma; font-size: 15px; color: black; font-weight: normal; text-align: justify; padding: 2px; float: clear; overflow: hidden}       
      
#reakce {background-color: none; border-bottom: 1px solid silver; margin-top: 1cm; margin-left: 1cm;  
      font-family: tahoma; font-size: 14px; color: gray; font-weight: normal; font-style: italic; text-align: justify; padding: 2px; float: clear; overflow: hidden}