styles.css

#mine-animation-left,
#mine-animation-right {
  display: none;
  font-size: 48px;
  color: gold;
  position: absolute;
  animation: blink 1s linear;
}

#mine-animation-left {
  left: calc(50% - 130px);
  top: -20px;
}

#mine-animation-right {
  right: calc(50% - 130px);
  top: -20px;
}

@keyframes blink {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

#helpers {
  margin-top: 10px;
}

.helper {
  font-size: 30px;
  display: inline-block;
  animation: bob 1s infinite;
}

@keyframes bob {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
  100% {
    transform: translateY(0);
  }
}

#price-arrow {
  font-size: 20px;
  color: white;
}

.shop-helper {
  font-size: 30px;
  display: inline-block;
}

.table-responsive {
  overflow-x: auto;
}

.table {
  width: 100%;
  margin: 0 auto;
  white-space: nowrap;
}

.table .fixed-col {
  position: sticky;
  left: 0;
  background-color: #343a40;
  z-index: 1;
}

.graph-section,
.stats,
.mine-section,
.shop-panel {
  margin-bottom: 20px;
}

.mine-btn {
  padding: 20px 40px;
  font-size: 24px;
  background-color: #61dafb;
  border: none;
  border-radius: 10px;
  box-shadow: 0 9px #999;
  transition: transform 0.1s, box-shadow 0.1s;
}

.mine-btn:active {
  transform: scale(0.95);
  box-shadow: 0 5px #666;
}