body {
    font-family: Arial, sans-serif;
    margin: 0;
}

.sidebar {
    height: 100%;
    width: 250px;
    position: fixed;
    z-index: 1;
    top: 0;
    left: 0;
    background-color: #00a6e2;
    padding-top: 20px;
}

.sidebar a {
    padding: 15px;
    text-decoration: none;
    font-size: 18px;
    color: white;
    display: block;
    transition: background-color 0.3s;
}

.sidebar a:hover {
    background-color: #575757;
}

.content {
    margin-left: 250px;
    padding: 20px;
}

.header, .footer {
    text-align: center;
    padding: 10px 0;
    background-color: #f1f1f1;
}

.contact-btn {
    background-color: #28a745;
    color: white;
    padding: 10px 20px;
    text-align: center;
    border-radius: 5px;
    margin: 5px;
    display: inline-block;
    transition: background-color 0.3s;
}

.contact-btn:hover {
    background-color: #218838;
}

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