body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
}

header,
footer {
  background-color: #f2f2f2;
  padding: 1em;
  text-align: center;
}

main {
  padding: 2em;
}

h1.visually-hidden {
  position: absolute;
  left: -9999px;
}

ul {
  padding-left: 1.5em;
}

.galeria {
  display: flex;
  flex-wrap: wrap;
  gap: 1em;
}

.galeria img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid #ccc;
  border-radius: 4px;
}