body {background-image: url("170823.jpg")}

      .container {
            max-width: 800px;
            margin: auto;
            background-image: url("fondo-de-madera.jpg");
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
      }
         h1 {
            color: black; 
            text-align: center;
            border-bottom: 2px solid #eee;
            padding-bottom: 10px;
        }
        #solitario{
          border:10px white solid;
          background-color: green;
        }