* {
    font-family: Arial, Helvetica, sans-serif;
    background-color: rgb(230, 224, 218);
  }

  body {
    text-align: center;
    padding: 15px;
    margin: 15px;
    font-weight: bold;
  }

.resalta {
    background-color: aqua;
    color: blue;
}

h2{
    border-bottom: 4px solid brown;
}

h3{
  text-align: center;
  font-size: 1.5em;
  font-weight: bold;
  color: brown;
}

.azul {
  color: blue;
}
.cafe {
  color: brown;
}
footer {
    text-align: center; 
    font-size: 1.5em; 
    color: blue;
    border-top: 4px solid brown;
}
.btn-regresar {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #333;
  color: aqua;
  padding: 10px 20px;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

.btn-regresar:hover {
  background-color: #444;
}