body{font-family:Arial,sans-serif;margin:0;padding:0;background:#f8f9fa}#menu-toggle{position:fixed;top:15px;right:15px;background:none;border:none;font-size:24px;cursor:pointer}.menu{position:fixed;top:0;right:-100%;width:250px;height:100%;background:#333;color:#fff;display:flex;flex-direction:column;align-items:center;transition:transform .3s ease-in-out;padding-top:50px;will-change:transform}.menu.open{transform:translateX(-100%)}.menu ul{list-style:none;padding:0;text-align:center}.menu ul li{margin:20px 0}.menu ul li a{color:#fff;text-decoration:none;font-size:18px}#close-menu{background:none;border:none;color:#fff;font-size:24px;position:absolute;top:15px;left:15px;cursor:pointer}