body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
  background: #f9f9f9;
  color: #333;
}
header {
  background: #002b5c;
  color: #fff;
  padding: 1em;
  text-align: center;
}
main {
  display: flex;
  margin: 1em;
}
#controls {
  width: 20%;
  padding: 1em;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 5px;
}
#feed {
  flex-grow: 1;
  margin-left: 1em;
}
.post-card {
  background: #fff;
  margin: 0.5em 0;
  padding: 1em;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.post-meta {
  font-size: 0.9em;
  color: #666;
}
.why {
  font-size: 0.8em;
  margin-top: 0.5em;
  color: #444;
  background: #f1f1f1;
  padding: 0.5em;
  border-radius: 3px;
}
footer {
  text-align: center;
  padding: 1em;
  background: #002b5c;
  color: #fff;
  margin-top: 1em;
}