html, body { height:100%; overflow:hidden; }

body, p { margin:0; padding:0; border:0;  line-height:0px;}
body{
      background-image: url(../img/fon.jpg) ;
}
p { text-align:right; font: normal 11px arial; line-height: 20px; vertical-align:middle; margin-right:20px;}
#topPanel{
    width: 100%;
    height: 490px;
    background-image: url(../img/topPanel.png) ;
    background-color: transparent;
}
#game{
      width:300px;
      background-color: rgba(200,200,200,0.5);
      padding: 5px;
      
      margin: auto;
}

.btn{
    width:300px;
    height:30px;
    background-color: rgba(200,200,200,0.3);
   
  //  margin: 5px;
    line-height: 30px;
    text-align: center;
    vertical-align: middle;
    font-size: 14px;
    font-weight: bold;  
    font-family: "PTSansBold";
    cursor: pointer;
    border: 1px solid  rgba(200,200,200,0.3);
}

.btn:hover{
    background-color: rgba(200,200,200,0.8);
    border: 1px solid darkblue;
}