body {
  font-family: sans-serif;
  margin: 0;
  padding: 1em;
  background: #f4f4f4;
}
header, footer {
  background: #0d6efd;
  color: white;
  padding: 1em;
  text-align: center;
}
.controls button {
  margin: 0.2em;
}
main article {
  background: white;
  margin: 1em 0;
  padding: 1em;
  border-radius: 10px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
article img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 0.5em;
}
a {
  display: inline-block;
  margin-top: 0.5em;
}