* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    display: flex;
}

.sidebar {
    width: 250px;
    background-color: #555;
    color: white;
    height: 100vh;
    overflow: hidden;
}

.sidebar-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

h2 {
    margin: 16px;
    font-size: 1.5em;
}

nav ul {
    list-style-type: none;
    padding: 0;
    flex-grow: 1;
}

nav ul li a {
    display: block;
    padding: 16px;
    text-decoration: none;
    color: white;
    transition: background 0.3s;
}

nav ul li a:hover, nav ul li a.active {
    background-color: #444;
}

main {
    flex-grow: 1;
    padding: 20px;
}

section {
    display: none;
}

section:target {
    display: block;
}

hr {
    border: 0;
    height: 1px;
    background: #ccc;
    margin: 10px 0;
}

.profile-pic {
    float: right;
    margin-left: 20px;
    width: 150px;
    height: auto;
}

.icon {
    width: 20px;
    height: auto;
    margin-right: 10px;
    vertical-align: middle;
}

.publication {
    margin-bottom: 20px;
}

.publication p {
    margin: 5px 0;
}

@media (max-width: 600px) {
    .sidebar {
        width: 100%;
        height: auto;
    }
}