body {
  min-height: 100%; background: linear-gradient(#00e200 , #007f00 )fixed no-repeat;
  }

#gameDiv {
  width: 800px; background-color: #ffffe6; position: absolute; top:0; left: 0; right: 0; margin: auto; padding: 40px;
  }

h4 {
  margin-left: 10px; font-weight:bold;
  }

p {
  margin-left: 20px;
  }

hr {
  border: 0; height:5px; background-image:
  linear-gradient(to right, rgba(0, 128, 0, 0), rgba(0, 128, 0, 0.8), rgba(0, 128, 0, 0))
  }



li {
  padding-bottom:8px;
  }

.center {
  text-align: center;
  }

.imgCenter {
  display: block;
  margin-left: auto;
  margin-right: auto;
  }

.level {
  padding-left:20px; padding-right:20px;
  }