nav li {
  display:  block;
  width:    80px;
  float:    left;
}

nav a {
  color: #fff;
  background: url(hoshi.png)repeat-x bottom;
  font-weight:bold;
  display: block;
  line-height:  1.0;
  padding:    6px 0;
  border-left:  1px solid #fff;
  text-align:center;
  text-decoration:none;
}

nav #current a {
  color:  lemonchiffon;
  background: midnightblue;
}

nav a:hover {
  background: url(iro.png) repeat-x bottom;
}

body {
    background-image: url("haikei.png");
    color: #fff;
    
}

#maze{
    width: 930px;
    height: 600px;
    touch-action: none;
}

h4 {
    border: dotted 2px lightyellow;
    background-color: midnightblue;
    padding: 10px;
}