body {
    font-family: Arial, sans-serif;
    background-image: url(img/aa.jpg);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-size: cover;
    background-position: center;
}

.container {
    background-color: green;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 90%;
    max-width: 600px;
    text-align: center;
}

.header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.logo {
    max-width: 80px;
    margin-right: 20px;
    flex-shrink: 0;
}

h1 {
    color: red;
    margin: 0;
    font-size: 1.5em;
}

.login-form {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.login-form .form-group {
    width: 100%;
    margin-bottom: 15px;
}

.login-form label {
    display: block;
    margin-bottom: 5px;
    color: black;
    text-align: left;
    font-size: 1em;
}

.login-form input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1em;
}

.login-button {
    width: 100%;
    padding: 10px;
    background-color: red;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.2em;
    margin-top: 15px;
}

.login-button:hover {
    background-color: darkred;
}

.back-to-register {
    display: block;
    text-align: center;
    margin-top: 15px;
    color: green;
    text-decoration: none;
    font-size: 0.9em;
}

.back-to-register:hover {
    text-decoration: underline;
}

footer {
    margin-top: 20px;
    color: red;
    font-size: 0.9em;
    text-align:center;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .logo {
        max-width: 70px;
        margin-right: 10px;
    }

    h1 {
        font-size: 1.2em;
    }

    .login-button {
        font-size: 1em;
    }

    footer {
        font-size: 0.8em;
    }
}

@media (max-width: 480px) {
    .header {
        flex-direction: column;
    }

    .logo {
        margin-right: 0;
        margin-bottom: 10px;
    }

    h1 {
        font-size: 1em;
    }
}