body {
  margin: 0;
  background-color: #0b0f0c;
  color: #e4e4e4;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  height: 100vh;
  align-items: center;
  justify-content: center;
}

.container {
  text-align: center;
}

h1 {
  color: #bada55;
  margin-bottom: 30px;
}

.btn {
  display: block;
  width: 260px;
  margin: 15px auto;
  padding: 15px;
  background: #bada55;
  color: #111;
  font-size: 1.1em;
  font-weight: bold;
  text-decoration: none;
  border-radius: 10px;
  transition: 0.3s;
}

.btn:hover {
  background: #cfff5f;
}
.logo-img {
  width: 500px;
  margin-bottom: 20px;
}