body {
  font-family: 'Avenir', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #000000;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  text-align: center;
}
header {
  background-color: #ff9a1e;
  color: #000000;
  padding: 20px;
  text-align: center;
  }
  img {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
    gap: 15px;
  margin-top: 10px;
  }
  
h1, h2, h3 {
  list-style: none; 
  margin: 5px;
  margin-bottom: 5px;
  color: #ff9a1e;
  text-align: center;
}
h1 {
  margin-top: 40px;
}
h4 {
  color: #000000;
  margin: 0;
  text-align: center;
}

a {
  color: #000000;
  text-decoration: underline;
  text-align: center;
}
footer {
  margin-top: 40px;
  padding: 10px;
  text-align: center;
  font-size: 0.9em;
  color: #666;
}
.header-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.header-button {
  display: inline-block;
  padding: 10px 20px;
  border: 2px solid #000000;
  border-radius: 6px;
  background-color: #ffffff;
  color: #000000;
  text-decoration: none;
  font-weight: bold;
  transition: background-color 0.3s, color 0.3s, transform 0.2s;
}

.header-button:hover {
  background-color: #000000;
  color: #000000;
  transform: scale(1.05);
}
.contenedor-recuadro {
  background-color: #ff9a1e;
  color: #000000;
  padding: 20px;
  margin: 40px auto;
  max-width: 800px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
  text-align: left;
}
.resaltado {
  font-size: 1.6em;
  font-weight: bold;
  color: #ff9a1e;
}
.fotos-gata {
  display: flex;
  gap: 20px; 
  justify-content: center; 
  align-items: center; 
  margin-top: 20px;
}
.contenedor {
  background-color: #ffffff;
  color: #000000;
  padding: 10px;
  margin: 70px auto;
  max-width: 800px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
  text-align: left;
}
(max-width: 400px) 
  .fotos-gata {
    flex-direction: column;
    align-items: center;
  }

  .fotos-gata img {
    width: 40%;
    max-width: none;
  }
    section {
    width: 100%;        
    margin: 0;        
    padding: 0px;  
    align-items: center
  }
  (max-width: 400px) {
  .contenedor,
  .contenedor-recuadro {
    width: 100vw;     
    margin: 0;         
    border-radius: 0;  
    box-shadow: none;  
    padding-left: 15px;
    padding-right: 15px;
  }
}