body {
  margin: 0;
  padding: 0;
  font-family: 'Helvetica Neue', sans-serif;
  background-color: #f4f8f5;
  color: #333;
}

header {
  text-align: center;
  padding: 2em 1em;
  background-color: #cfe3d7;
  color: #2f4f4f;
}

h1 {
  font-size: 2.5em;
  margin-bottom: 0.2em;
}

h2 {
  font-size: 1.8em;
  margin-top: 2em;
  color: #4f6f61;
  text-align: center;
}

p {
  font-size: 1.1em;
  line-height: 1.6em;
  margin: 1em;
}

button {
  display: block;
  margin: 1em auto;
  padding: 0.8em 1.5em;
  background-color: #6ba78d;
  color: white;
  border: none;
  border-radius: 5px;
  font-size: 1em;
}

.mensaje {
  background-color: #e9f5ef;
  border-left: 4px solid #6ba78d;
  margin: 1em auto;
  padding: 1em;
  max-width: 600px;
  border-radius: 5px;
}

.galeria {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1em;
  padding: 1em;
}

.galeria img,
.galeria video {
  width: 300px;
  border-radius: 5px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

footer {
  text-align: center;
  padding: 2em 1em;
  background-color: #cfe3d7;
  color: #2f4f4f;
  margin-top: 3em;
}