<style>
/* Main container */
.menu-container {
    position: fixed;
    bottom: 10px; /* Stays at the bottom */
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    background: white;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.1);
    z-index: 99999;
    transition: all 0.3s ease-in-out;
}

/* Horizontal menu */
.menu-items {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 10px;
}

/* Menu items styling */
.menu-items li {
    padding: 8px 15px;
    background: #fff;
    border-radius: 5px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

/* Menu links */
.menu-items li a {
    text-decoration: none;
    color: #333;
    display: block;
}
</style>

<!-- Navigation bar -->
<div class="menu-container">
    <ul class="menu-items">
        <li><a href="#home">Home</a></li>
        <li><a href="#about">About</a></li>
        <li><a href="#services">Services</a></li>
        <li><a href="#contact">Contact</a></li>
    </ul>
</div>