body {
    margin: 0;
    padding: 0;
    background-color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    font-family: 'Arial', sans-serif;
    
}

.login-container {
    text-align: center;
    color: white;
}

.qr-title {
    font-size: 24px;
    margin-bottom: 20px;
}

.qr-code-box {
    width: 250px;
    height: 250px;
    border: 4px solid #fff;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    padding: 10px;
    background-color: #fff;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.qr-code {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.tips {
    margin-top: 30px;
    font-size: 16px;
    color: #aaa;
}

.refresh-btn {
    margin-top: 20px;
    padding: 8px 20px;
    background-color: #07C160;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s;
}

    .refresh-btn:hover {
        background-color: #05a84c;
    }