body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  padding: 0;
  background-color: #f4f4f4;
  height: 100vh;
  display: flex;
  flex-direction: column;
}
header {
  background-color: #8ac441;
  height: 12vh;
  display: flex;
  justify-content: center;
  align-items: center;
}
header img {
  max-height: 100%;
  background-color: #f4f4f4;
}
main {
  max-width: 600px;
  margin: 40px auto;
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
}
input[type="text"],
input[type="password"] {
  width: 90%;
  padding: 10px;
  margin-bottom: 20px;
  border: 1px solid #ccc;
  border-radius: 4px;
}
button {
  width: 94%;
  padding: 10px;
  background-color: #8ac441;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
}
button:hover {
  background-color: #78a338;
}
footer {
  background-color: #333;
  color: white;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  padding: 10px 0;
}
footer a {
  color: #8ac441;
  text-decoration: none;
  margin: 0 15px;
}
footer a:hover {
  text-decoration: underline;
}
#response-message {
  margin-top: 20px;
  font-weight: bold;
  color: red;
}