styles.css

@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600&display=swap");

* {
  box-sizing: border-box;
}
:root {
  --border: #022f40;
  --water: #30bced;
  --bg: rgb(83, 156, 216);
  --fill: #3494e3;
  --light: #fffaff;
}

/* Custom Scrollbar */
/* width */
::-webkit-scrollbar {
  width: 10px;
}
/* Track */
::-webkit-scrollbar-track {
  background: #86c7cf;
}
/* Handle */
::-webkit-scrollbar-thumb {
  background: #022f40;
}
/* Handle on hover */
::-webkit-scrollbar-thumb:hover {
  background: #183446;
}

body {
  font-family: "Montserrat", sans-serif;
  background-color: var(--bg);
  color: #fff;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 40px;
}

h1 {
  margin: 10px 0 0;
}
h3 {
  font-weight: 400;
  margin: 10px 0;
}

.cup {
  background-color: rgba(255, 255, 255, 0.8);
  border: 4px solid var(--border);
  border-top: none;
  color: var(--border);
  border-radius: 0 0 30px 30px;
  height: 310px;
  width: 160px;
  margin: 8px 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.cup-small {
  width: 50px;
  height: 100px;
  border-radius: 0 0 15px 15px;
  background-color: rgba(255, 255, 255, 0.8);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: bold;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin: 10px;
  padding: 0 24px;
  transition: 0.3s ease;
}

.cups {
  display: flex;
  flex-wrap: wrap;
  width: 320px;
  align-items: center;
  justify-content: center;
}
.full {
  background-color: var(--fill);
}
.cup-small.full {
  background-color: var(--fill);
  color: var(--light);
}

.remaining {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex-direction: column;
  flex: 1;
}

.remaining span {
  font-size: 1.3rem;
  font-weight: bold;
}

.remaining small {
  font-size: 0.75rem;
  font-weight: bold;
}

.percentage {
  background-color: var(--fill);
  color: var(--light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: bold;
  height: 0;
  transition: 0.3s ease;
}