style.css

html {
  box-sizing: border-box;
  font-size: 10px;
  background: -webkit-linear-gradient(to left, #799f0c, #ffe000);
  background: linear-gradient(to left, #799f0c, #ffe000);
}

*,
*:before,
*:after {
  box-sizing: inherit;
}
@font-face {
  font-family: "Sansation Bold";
  src: url("Sansation_Bold.ttf");
}

body {
  padding: 0;
  margin: 0;
  font-family: "Sansation Bold", cursive;
}

.title {
  margin: 40px auto;
  text-align: center;
  font-size: 7rem;
}
.score,
#current-lvl,
#best-score {
  background: rgba(255, 255, 255, 0.2);
  padding: 0 2rem;
  line-height: 1;
  border-radius: 1rem;
  font-size: 3rem;
}

.game {
  width: 50%;
  height: 400px;
  display: flex;
  flex-wrap: wrap;
}

.hole {
  flex: 1 0 33.33%;
  overflow: hidden;
  position: relative;
}

.hole:after {
  display: block;
  background: url(dirt.svg) bottom center no-repeat;
  background-size: contain;
  content: "";
  width: 100%;
  height: 70px;
  position: absolute;
  z-index: 2;
  bottom: -30px;
}

.mole {
  background: url("mole.svg") bottom center no-repeat;
  background-size: 60%;
  position: absolute;
  top: 100%;
  width: 100%;
  height: 100%;
  transition: all 0.4s;
}

.hole.up .mole {
  top: 0;
}

#click {
  margin-top: 25px;
  color: #ff9900;
  background: none;
  font-weight: bold;
  border: none;
  font-size: 8rem;
  text-shadow: 4px 4px 12px black;
  font-family: "Sansation Bold", cursive;
  text-transform: uppercase;
}

.circle {
  border: 2px solid black;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  padding-top: 30px;
}

.wrapper {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
}

.score-wrap {
  display: inline-block;
}
.score-wrap h1 {
  font-size: 2.2rem;
  margin-bottom: 10px;
}

.leader-board {
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  border-radius: 8px;
  padding: 30px;
}

.time-left {
  text-align: center;
  font-size: 4rem;
  margin-bottom: 10px;
  position: absolute;
  top: 0;
  left: 5%;
}

/*------- For The best-score Page --------*/
.play-again {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  align-items: center;
  margin: 25vh auto;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  border-radius: 8px;
  padding: 30px;
  width: 350px;
}

.play-again h1 {
  font-size: 3rem;
  margin-bottom: 10px;
}