body{
  background-color: black;
  color: white;
}

  a:link, a:visited {
    color: #00BFFF; /* azul-ciano para link */
    text-decoration: none;
  }

  a:hover {
    color: #FFA500; /* laranja ao passar o mouse */
    text-decoration: underline;
  }

  a:active {
    color: #32CD32; /* verde quando clicado */
  }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100vh;
  box-sizing: border-box;
}

h2 {
  background-color: #00bfff2a;
}

button {
  cursor: pointer;
}

#aviso {
  background-color: rgba(74, 74, 4, 0.26);
}

.tag {
   font-family: Arial, sans-serif;
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 999px;
    font-weight: 400;
    background: transparent;
    color: white; /* texto branco */
}

/* bordas coloridas */
.tag.enem {
    border: 1px solid #ff2e88;
}

.tag.vestibular {
    border: 1px solid #c2185b;
}

.tag.concurso {
    border: 1px solid #8e244d;
}