html, body {
  font-family: Arial, sans-serif;
  background-color: #ffffff;
  color: #000000;
  padding: 0;
  text-align: center;
  height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
  display: flex;
  justify-content: center;   /* horizontal center */
  align-items: center;       /* vertical center */
  flex-direction: column;    /* konten ditumpuk vertikal */
}
header {
  padding: 20px;
}

h1 {
  font-size: 24px;
  margin: 0;
}

.server-select {
  margin: 20px;
  font-size: 16px;
}

.server-select select {
  padding: 6px 12px;
  font-size: 16px;
  border-radius: 5px;
}

.speed-display {
  font-size: 80px;
  font-weight: bold;
  margin: 40px 0;
}

.unit {
  font-size: 24px;
  margin-left: 10px;
}

.start-button {
  background-color: #e50914; /* merah khas Netflix */
  color: #fff;
  border: none;
  padding: 12px 24px;
  font-size: 18px;
  border-radius: 5px;
  cursor: pointer;
}

.start-button:hover {
  background-color: #b20710;
}

#infoPanel {
  margin: 30px;
  font-size: 16px;
}

footer {
  margin-top: auto; /* dorong footer ke bawah */
  background-color: #161b22;
  color: #e6e6e6;
  text-align: center;
  padding: 10px;
  font-size: 14px;
}