body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}

.login-container, .ip-container {
    width: 500px;
    margin: 100px auto;
    padding: 20px;
    background: white;
    border-radius: 5px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h2 {
    text-align: center;
}

div {
    margin-bottom: 10px;
}

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

input[type="text"], input[type="password"] {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 10px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 3px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}

.error {
    color: red;
}

.success {
    color: green;
}