html, body {
  height: 100%;
  margin: 0;
  font-family: "Raleway", sans-serif;
  color: black;
  background: none;
}
.bgimg {
  background-image: url('../img/bag.png');
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-position: center;
  background-size: cover;
  z-index: -2;
}
.overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: -1;
}
.login-box {
  position: relative;
  z-index: 1;
  background-color: white;
  max-width: 400px;
  margin: auto;
  padding: 30px;
  border-radius: 6px;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
  text-align: center;
  top: 50%;
  transform: translateY(-50%);
}
input, button {
  font-family: "Raleway", sans-serif;
  font-size: 18px;
  padding: 10px;
  margin-top: 10px;
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 4px;
  box-sizing: border-box;
}
button {
  background-color: white;
  color: black;
  cursor: pointer;
  border: 1px solid #888;
  transition: background-color 0.3s ease;
}
button:hover {
  background-color: #eee;
}
a.back-link {
  display: block;
  margin-top: 20px;
  color: #333;
  font-size: 16px;
  text-decoration: underline;
  cursor: pointer;
}
a.back-link:hover {
  color: #111;
}
#errorMessage {
  color: #ff0000;
  margin-top: 10px;
  display: none;
}

@media only screen and (max-width: 600px) {
  .login-box {
    margin-left: 2vw !important;
    margin-right: 2vw !important;
    max-width: 95vw !important;
  }
}