html,
body {
  height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  font-family: Arial, sans-serif;
}

#headBar {
  text-align: center;
  margin: 0 auto;
  padding: 40px;
  background-color: #003171;
  color: #ffffff;
  font-size: 40px;
}

#headBarAdmin {
  text-align: center;
  margin: 0 auto;
  padding: 40px;
  background-color: #7e8082;
  color: #ffffff;
  font-size: 40px;
}

#mainDiv {
  max-width: 600px;
  margin: 0 auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#mainDiv img {
  width: 100%;
  margin-bottom: 20px;
}

#divButton {
  display: flex;
}

input,
select {
  width: 100%;
  padding: 12px 20px;
  margin: 8px 0;
  display: inline-block;
  border: 1px solid #ccc;
  box-sizing: border-box;
  font-size: 20px;
  border-radius: 5px;
}

.entrar {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  box-sizing: border-box;
  font-size: 20px;
  border: none;
  border-radius: 5px;
  background-color: #0055a5;
  color: white;
  cursor: pointer;
}

.entrar:hover {
  background-color: #003e7d;
}

.entrarAdmin,
.voltar {
  width: 100%;
  padding: 10px;
  margin-bottom: 10px;
  box-sizing: border-box;
  font-size: 20px;
  border: none;
  border-radius: 5px;
  background-color: #7e8082;
  color: white;
  cursor: pointer;
}

.entrarAdmin:hover,
.voltar:hover {
  background-color: #5f6061;
}

.botao-opcao {
  width: 200px;
  height: 200px;
  padding: 10px;
  margin: 0px 20px;
  box-sizing: border-box;
  font-size: 20px;
  border: none;
  border-radius: 5px;
  background-color: #0055a5;
  color: white;
  cursor: pointer;
}

.botao-opcao:hover {
  background-color: #003e7d;
}

#mensagem {
  text-align: center;
  margin-top: 20px;
  font-size: 25px;
}

.error {
  color: red;
}

.success {
  color: green;
}

#divRodape {
  padding: 10px;
}

#divRodape img {
  width: 50%;
  margin: auto;
  display: block;
}

@media only screen and (max-width: 1000px) {
  #mainDiv {
    max-width: 800px;
  }

  #divRodape img {
    width: 90%;
  }

  .botao-opcao {
    width: 300px;
    height: 300px;
    font-size: 40px;
  }

  .entrar,
  .voltar,
  input,
  #sessaoSelect {
    height: 80px;
    font-size: 40px;
  }
}