body, html {
  height: 100vh;
}

body {
  background-image: linear-gradient(to right, #00a8e4, #00509e, #00285f);
}

#header {
  background: white;
  clip-path: ellipse(80% 100% at 50% 0%);
}
#header img {
  max-height: 20vh;
  width: auto;
}
#header.quiz img {
  max-height: 15vh;
}

#next-btn {
  cursor: pointer;
  transition: all 0.2s;
}
#next-btn:hover {
  transform: scale(1.2) !important;
}

.hide {
  display: none;
}

#answer-buttons {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2em;
  margin: 20px 0;
}

button.answer {
  border: 1px solid white;
  border-radius: 10px;
  color: white;
  font-weight: bold;
}
button.answer:hover {
  background: white;
  color: black;
}
button.answer.correct {
  background-color: #28a745;
}
button.answer.wrong {
  background-color: #dc3545;
}