#board {
   background: url('Game_BG.png');
   background-size: cover;
   border: 10px solid black;
   height: 350px;
   width: 650px;
  }
  #board.clicked{
    border: 10px solid red;
  }
  .character {
   background: url('Guest.png');
   background-size: cover;
   width: 120px;
   height: 120px;
   padding: 10px;
   margin: 10px;
   float: left;
   display: none;
  }
  .thief {
   background: url('Thief.png');
   background-size: cover;
  }
  .hidden {
   display: none;
  }
  .visible {
   display: block;
  }
  .strong{
    font-family: Arial, Helvetica, sans-serif;
    font-size: 15pt;
    color: blue;
  }
   #buttons input[type="button"] {
    background-color: darkgreen;
    color: black;
    color: white;
  }
  #buttons.game_running input[type="button"]{
    background-color: darkred;
  }