html {
  background-color: #161618;
}

body {
  font-family: "Courier New", Courier, monospace;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  flex-direction: column; 
}

header {
  padding: 10px;
  position: fixed;
  top: 0;
  left: 0;
}


button {
  background-color: #9b9999; 
  color: #000000; 
  padding: 8px 16px; 
  border: none; 
  border-radius: 4px; 
  cursor: pointer; 
  font-size: 14px;
 
  margin-top: 10px;
  font-family: "Courier New", Courier, monospace;
}


button:hover {
  background-color: #a19f9f; 
}

h2 {
  color: #9b9999;
  font-size: 40px;
}

h1 {
  color: #ffffff;
  padding-top: 10px;
  animation: mudarTexto 15s linear infinite;
}

@media (max-width: 768px) {
  h2 {
    font-size: 24px; 
  }

  h1 {
    font-size: 16px; 
  }
}