body {
  margin: 0;
  padding: 0;
  height: 100vh; /* altura da tela inteira */
  display: flex;
  flex-direction: column;
}

h1, h2 {
  text-align: center;
}

select {
  padding: 8px;
  font-size: 16px;
  border-radius: 5px;
  border: 1px solid #ccc;
  margin: 10px auto;
  display: block;
}

.conteudo {
  flex: 1; /* ocupa todo o espaço livre acima do footer */
  overflow-y: auto; /* ativa rolagem só dentro do container */
  padding: 20px;
}

.modulo {
  background: white;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  padding: 20px;
  margin-bottom: 20px;
}

.listar {
  text-decoration: none;
  border-radius: 5px;
  background-color: white;
  padding: 8px 15px;
  font-size: 16px;
  color: blue;
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
}

footer.dicas {
  background: #eaf7ff;
  border-top: 3px solid #007bff;
  padding: 10px;
  text-align: center;
  box-shadow: 0 -2px 5px rgba(0,0,0,0.1);
}

footer.dicas ul li {
  list-style: none;  /* remove os bullets */
}