body {
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  background-color: #f4f4f4;
}

.container {
  background-color: #fff;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
  text-align: center;
  width: 20%;
}
/* Tablet */
@media (max-width: 768px) {
  .container {
    width: 60%;
  }
}
/* Mobile */
@media (max-width: 480px) {
  .container {
    width: 80%;
  }
}

h1 {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 5px;
}

input[type="text"], input[type="password"] {
  width: 100%;
  padding: 10px;
  margin-bottom: 15px;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}

button {
  background-color: #4CAF50;
  color: white;
  padding: 12px 20px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}