body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    text-align: center;
}

h1 {
    margin-bottom: 30px;
    display: block;
    width: 100%;
}

#login-content, #user-content {
    width: 100%;
    margin-top: 20px;
}

#user-content {
    display: none;
}

button {
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    background-color: #4285f4;
    color: white;
    border: none;
    border-radius: 4px;
    margin: 10px;
}

button:hover {
    background-color: #357ABD;
}

#user-profile {
    margin-top: 20px;
}

.profile-img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin-bottom: 10px;
}

#user-name {
    margin: 10px 0 5px 0;
}

#user-email {
    margin: 5px 0;
    color: #666;
}