body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    display: flex;
}

.sidebar {
    background-color: #333;
    color: #fff;
    padding: 1em;
    width: 200px;
    height: 100vh;
    position: fixed;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.logo {
    margin-bottom: 2em;
}

.logo img {
    max-width: 100%;
    height: auto;
}

.sidebar ul {
    list-style: none;
    padding: 0;
    width: 100%;
}

.sidebar ul li {
    margin: 1em 0;
    text-align: center;
}

.sidebar ul li a {
    color: #fff;
    text-decoration: none;
}

.social-icons {
    margin-top: 2em;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.social-icons a {
    margin: 0.5em;
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    background-color: #fff;
    overflow: hidden;
}

.social-icons img {
    max-width: 100%;
    max-height: 100%;
}

.content {
    margin-left: 220px;
    padding: 2em;
    width: calc(100% - 220px);
    background-color: #fff;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1em 0;
    position: fixed;
    width: 100%;
    bottom: 0;
}