.definition {
  background-color: #e0f7fa;
  padding: 15px;
  border-left: 5px solid #0097a7;
  margin: 1em 0;
}

.theorem {
  background-color: #fff3e0;
  padding: 15px;
  border-left: 5px solid #fb8c00;
  margin: 1em 0;
}

.proposition {
  background-color: #fff3e0;
  padding: 15px;
  border-left: 5px solid #fb8c00;
  margin: 1em 0;
}

.hypothesis {
  background-color: #e0f7fa; /* tom suave de azul */
  padding: 15px;
  border-left: 5px solid #00acc1; /* azul mais escuro */
  margin: 1em 0;
}

.corollary {
  background-color: #fff3e0;
  padding: 15px;
  border-left: 5px solid #fb8c00;
  margin: 1em 0;
}

.example {
  background-color: #e8f5e9;
  padding: 15px;
  border-left: 5px solid #43a047;
  margin: 1em 0;
}

.remark {
  background-color: #f3e5f5;
  padding: 15px;
  border-left: 5px solid #8e24aa;
  margin: 1em 0;
}

.exercise {
  background-color: #fbe9e7;
  padding: 15px;
  border-left: 5px solid #d84315;
  margin: 1em 0;
}