style.css

html,
body,
.container2 {
  background-color: lightblue;
}
.cell {
  background-color: rgb(233, 233, 233);
  width: 25px;
  height: 25px;
  display: inline-block;
  margin: 0px;
  position: relative;
  background-size: cover;
}
.clicked {
  border: 2px solid grey;
}
.not_clicked {
  border-top: 2px solid white;
  border-left: 2px solid white;
  border-right: 2px solid grey;
  border-bottom: 2px solid grey;
}
.map_ul {
  margin: 0px;
  padding: 0px;
  border: 0px;
  height: 0px;
}
.title {
  left: 500px;
  top: 35px;
  position: relative;
  margin-bottom: 0px;
  padding-bottom: 0px;
}
.score_board {
  top: 65px;
  border: 2px solid black;
  background-color: lightgray;
  position: fixed;
  height: 50px;
  width: 85px;
  padding: 10px 5px;
  left: 200px;
}
.score_title {
  left: 200px;
  top: 40px;
  position: fixed;
}
.score_info {
  position: fixed;
  top: 120px;
  left: 200px;
}
.score_info p {
  margin-top: 0px;
  margin-bottom: 0px;
}
.game_completed {
  position: fixed;
  top: 250px;
  left: 550px;
  font-size: 3em;
}