body { background: #f8f9fa;   margin: 0;   padding: 0;}
        .wrapper { width: 1280px; height: 714px; position: relative; overflow: hidden; background: url('skyline.jpg'); background-position: left bottom; background-repeat: no-repeat; box-shadow: 0 5px 10px #A19F9F;
            background-size: contain;
            background-color: #fff;
      }

        .outcome {
            position: relative;
            margin: 100px auto;
            width: 800px;
            height: 200px;
            font-size: 40px;
            font-family: monospace;
            text-align: center;
        }

        #params {
          display: block;
          position: relative;
          z-index: 2;
          width: 100%;
          text-align: center;
          margin-top: 100px;
        }

        #force {
            width: 250px;
            height: 40px;
            font-size: 30px;
        }

        #angle {
            width: 200px;   height: 40px;   font-size: 30px;
        }

        #submit {
            width: 100px;   height: 40px;   font-size: 30px;
        }

        .bomb { width: 40px; height: 40px; position: absolute; bottom: 0; left: 0; background: url('bomb.png'); background-position: center center; background-size: initial; background-repeat: no-repeat; }
        .bomb_exploded { 
                            background:url('explosion.gif'); background-position: center center; background-size: contain; background-repeat: no-repeat; 
                        }
        .enemy {
          width: 30px;
          height: 56px;
          position: absolute;
          background: url('monkey.gif');
          background-size: cover;
          background-position: center -12px;
          background-repeat: no-repeat;
        }

        .e1 { bottom: 90px; left: 1047px; }
        .e2 { bottom: 100px; left: 843px; }
        .e3 { bottom: 45px; left: 803px; }
        .e4 { bottom: 47px; left: 723px; }
        .e5 { bottom: 8px; left: 1186px; }
        .e6 { bottom: 7px; left: 383px; }

        .cannon {
            width: 97px;
            height: 81px;
            background: url('cannon.png');
            position: absolute;
            left: -35px;
            bottom: -5px;
            z-index: 1;
            background-repeat: no-repeat;
            background-size: contain;
            transition: transform .1s;
        }