style.css

/* Reset da pagina */
* {
  margin: 0;
  box-sizing: border-box;
}

:root {
  /* Cores */
  --primary-color: hsl(234, 27%, 14%);
  --text-color: hsl(0, 0%, 100%);
}

body {
  background: var(--primary-color);
  color: var(--text-color);
  text-align: center;
  font-family: sans-serif;
}

#container {
  margin-top: 6.25rem;
  width: 80%;
  max-width: 25rem;
  margin-inline: auto;
}

h1 {
  margin-top: 4.25rem;
  margin-bottom: 0.625rem;
  opacity: 0.9;
}

p {
  margin-bottom: 2.5rem;
  opacity: 0.7;
}

input,
button {
  display: block;
  width: 100%;

  padding: 1.25rem;
  font-size: 1.25rem;
  border-radius: 0.25rem;
}

input {
  margin-bottom: 1.25rem;
}

button {
  border: none;
  background-color: blueviolet;
  color: white;
  transition: filter 0.3s;
}

button:hover {
  filter: brightness(1.2);
  cursor: pointer;
}

#resposta {
  margin-top: 1.8rem;
  transition: opacity 1s;
}

#resposta div {
  font-size: 1rem;
  font-weight: normal;
  opacity: 0.9;
  margin-bottom: 1.6rem;
}