style.css

@import url("https://fonts.googleapis.com/css2?family=Inter:wght@100..900&display=swap");

:root {
  --hue-neutral: 200;
  --hue-wrong: 0;
  --hue-correct: 145;
}

body {
  --hue: var(--hue-neutral);
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column-reverse;
  width: 100vw;
  height: 100vh;
  justify-content: center;
  align-items: center;
  font-family: "Inter", sans-serif;
  background-image: url(./images/background.jpg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

button.correct {
  --hue: var(--hue-correct);
}

button.wrong {
  --hue: var(--hue-wrong);
}

.container {
  width: 800px;
  max-width: 80%;
  min-height: 250px;
  background-color: white;
  padding: 20px;
  box-shadow: 0 0 10px 2px;
  background: rgba(1, 48, 92, 0.56);
  border-radius: 20px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(7.8px);
  -webkit-backdrop-filter: blur(7.8px);
  border: 5px solid rgba(1, 48, 92, 0.57);
}

#question {
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
  margin-bottom: 25px;
  margin-left: 4px;
}

.btn-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 20px 0;
}

#total-score-container {
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

#total-score-container p {
  font-size: 1.1rem;
  font-weight: 500;
  color: white;
  margin-bottom: 15px;
}

#total-score {
  font-size: 3rem;
  font-weight: bold;
  color: white;
  margin: 30px 0;
}

.btn {
  --hue: var(--hue-neutral);
  border: 2px solid hsl(var(--hue), 100%, 30%);
  border-radius: 16px;
  color: white;
  background-color: hsl(var(--hue), 100%, 50%);
  height: 50px;
  padding: 5px 10px;
  outline: none;
  cursor: pointer;
  font-size: 1.1rem;
  font-weight: 500;
}

.btn:hover {
  border-color: #0088ff;
}

.start-btn,
.next-btn {
  margin-top: 0.5rem;
  width: 175px;
  height: 50px;
  font-size: 1.1rem;
  font-weight: bold;
  cursor: pointer;
}

.controls {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hide {
  display: none;
}

#score {
  background-color: #0088ff;
  border-radius: 20px;
  width: 40px;
  height: 40px;
  justify-content: center;
  align-items: center;
  border: 2px solid rgb(175, 175, 175);
  margin-bottom: 8px;
}

#right-answers {
  font-weight: bold;
  color: white;
  font-size: 1.1rem;
}

/* small devices */
@media screen and (max-width: 720px) {
  .container {
    height: 415px;
  }

  .btn-grid {
    grid-template-columns: repeat(1, 1fr);
  }
}