body {
  font-family: "Prompt", sans-serif;
  background: linear-gradient(135deg, #e3f2fd, #bbdefb);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}
.container {
  text-align: center;
}
.logo {
  width: 120px;
  margin-bottom: 10px;
}
button {
  display: block;
  width: 220px;
  margin: 12px auto;
  padding: 15px;
  border: none;
  border-radius: 14px;
  font-size: 1.3em;
  cursor: pointer;
  background-color: #1976d2;
  color: white;
  transition: 0.25s;
}
button:hover {
  background-color: #0d47a1;
}