.container {
  margin: 3em auto;
}

#click {
  font-style: italic;
  font-weight: bold;
  font-size: 3em;
  position: relative;
  top: -3.7em; left: 1em;
  color: black;
}

img {
  position: relative;
  width: 21em; height: 21em;
  top: -3em; left: 4em;
}

#top {
  text-align: center;
  color: red;
  margin: 0;
  height: 12em;
}

span {
  color: red;
  font-size: 1.3em;
}

p {
  text-align: center;
  background-color: transparent;
  color: black;
  list-style: none;
  font-size: 1.4em; 
  margin: 0;  padding: 0.35em 0;
}

#instructions { 
  margin: 4em;
  padding-top: 3em;
}

.help { text-align: center; }

#info {
  text-align: center;
  margin-left: -11em;
  margin-top: 1em;
  margin-bottom: -1em;
  color: blue;
  font-weight: bold;
  font-size: 2em;
  vertical-align: middle;
}

#help {
  padding: .4em;
  margin: 0.6em 0 -1.8em -12em;
  background-color: red;
  color: white;
  font-size: 1.1em;
  border-radius: 5%;
  opacity: .7;
}

#rules {
  font-size: 1.6em; 
  font-weight: bold;
}

#levels, #players {
  position: relative;
  top: 2.5em;
  margin: 0.7em;
  text-align: center;
}

.game-level, .players {
  margin: 0.25em;  padding: .6em;
  background-color: red;
  font-size: 2em;
  border-radius: 15%;
  opacity: .7;
  color: white;
  font-family: verdana;
}

.players:focus, .game-level:focus {
  background-color: blue;
}

#board {
  position: relative;
  border: .1em solid white;
  width: 30em;  height: 30em;
  margin: 4em auto;
  text-align: center;
  color: black;
  background-color: transparent;
}

.box {
  float: left;
  display: inline-block;
  border: .12em outset gray;
  line-height: 2.5em;
  margin: 0; 
  background-color: navy;
  opacity: .8;
}

.mine { background-color: navy; }                /* reveals all mines on game board */
.shown { 
  background-color: transparent; 
  font-weight: bold;
  color: black;
  border: .12em inset gray;
}

.box:hover, .game-level:hover, .players:hover, #help:hover {
  background-color: blue;
  opacity: .8;
  font-style: italic;
}

#gg {
  text-align: center;
  font-size: 4em;
  font-weight: bold;
  color: red;
  position: relative;
  width: 20em;  height: 5em;
  margin: 2em auto;
}