body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}

.parent {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.center {
    text-align: center;
}

.div1, .div2 {
    margin: 20px 0;
    padding: 20px;
    border-radius: 8px;
}

.div1 {
    background: #f8f9fa;
    border: 1px solid #dee2e6;
}

.div2 {
    background: #fff3cd;
    border: 1px solid #ffeeba;
}

button {
    background: #1a73e8;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: background-color 0.2s;
}

button:hover {
    background: #1557b0;
}

.status {
    margin-top: 20px;
    padding: 15px;
    border-radius: 6px;
    font-size: 14px;
    display: none;
}

.success {
    background: #e6ffe6;
    color: #006600;
    border: 1px solid #b3ffb3;
    display: block;
}

.error {
    background: #ffe6e6;
    color: #660000;
    border: 1px solid #ffb3b3;
    display: block;
}

.address {
    font-family: monospace;
    background: #f8f9fa;
    padding: 5px 10px;
    border-radius: 4px;
    border: 1px solid #dee2e6;
}