body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f4f4f4;
    color: #333;
}
nav {
    background: #333;
    padding: 1em 0;
}
nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    margin: 0;
    padding: 0;
}
nav ul li {
    margin: 0 1.5em;
}
nav ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    letter-spacing: 1px;
}
.nav-right {
    position: absolute;
    right: 2em;
    top: 1.2em;
}
.nav-right a {
    color: #fff;
    background: #007bff;
    padding: 0.4em 1em;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: background 0.2s;
}
.nav-right a:hover {
    background: #0056b3;
}
.container {
    max-width: 700px;
    background: #fff;
    margin: 2em auto;
    padding: 2em;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    text-align: center;
}
h1 {
    margin-top: 0;
}
.welcome {
    font-size: 1.2em;
    margin-top: 1em;
}
.profile-img {
    display: block;
    margin: 0 auto 1.5em auto;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    background: #ddd;
}
h1, h2 {
    text-align: center;
}
section {
    margin-bottom: 1.5em;
}