@import url('https://fonts.googleapis.com/css2?family=Cousine&family=Lemonada&display=swap');

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* 62.5% de 16px(padrão do navegador) = 10px */
  font-size: 62.5%;

  --primary-bg-color: #2c3e50;
  --secundary-bg-color: #dde3e7;
  --primary-letter-color: #ecf0f1;
  --secundary-letter-color: #2c3e50;
}

body {
  font-weight: 400;
  font-size: 1.8rem;
  line-height: 1;
}

.header h1 {
  font-size: 4rem;
  font-weight: 400;
}

.header,
.main,
footer {
  display: flex;
  align-items: center;
  justify-content: center;
}

.header,
.footer {
  height: 6rem;
  font-family: 'Lemonada', cursive;

  background-color: var(--primary-bg-color);
  color: var(--primary-letter-color);
}

.main {
  height: 80vh;
  min-height: 30rem;
  font-size: 10rem;
  color: var(--secundary-letter-color);
  font-family: 'Cousine', monospace;
}

.press-key {
  background-color: var(--secundary-bg-color);
  font-size: 2rem;
  padding: 1rem 2rem;
}

.footer a {
  color: yellow;
  cursor: pointer;
}

@media (min-width: 750px) {
  .press-key {
    background-color: var(--secundary-bg-color);
    padding: 4rem 6rem;
    font-size: 3rem;
  }
}

.tooltip:before {
  content: 'copiado';

  font-size: 3rem;
  font-family: 'Cousine', monospace;
  color: #ffffff;

  display: flex;
  align-items: center;
  justify-content: center;

  position: absolute;
  right: 10%;
  top: 30%;

  width: 15rem;
  height: 7rem;
  background: #6686a7;
}