body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f5f5f5;
}
.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: #4285f4;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 10px;
}
.btn:hover {
    background-color: #357ae8;
}
.profile-pic {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: 10px;
}
.user-info {
    margin: 20px 0;
}
.error {
    color: #d93025;
    margin: 20px 0;
}