body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #1f1f1f;
  color: #f2f2f2;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
}

.container {
  max-width: 800px;
  padding: 20px;
  text-align: center;
}

#clock-date p {
  margin: 5px 0;
}

button#theme-toggle {
  position: fixed;
  right: 20px;
  top: 20px;
  padding: 6px 10px;
  z-index: 10;
  cursor: pointer;
}

.links a {
  display: inline-block;
  margin: 8px;
  padding: 10px 14px;
  background-color: #0078d4;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
}

.links a:hover {
  background-color: #005fa3;
}

.speedtest {
  margin-top: 20px;
}