header{background-image:url(../img/rayon.webp);background-size:cover;padding:10px 0;text-align:center}.navbar{display:flex;justify-content:center;align-items:center;position:relative;font-family:var(--nav-font-family)}.nav-links{list-style:none;display:flex;margin:0;padding:0}.nav-links li{margin:0 15px}.menu-icon{display:none;flex-direction:column;cursor:pointer}.menu-icon .bar{width:25px;height:3px;background-color:#fff;margin:4px 0;transition:0.4s}.nav-links a{text-decoration:none;position:relative;color:#fff;font-weight:700;font-size:20px}.nav-links a::after{content:'';position:absolute;width:100%;transform:scaleX(0);height:2px;bottom:0;left:0;background-color:var(--secondary-color);transform-origin:bottom right;transition:transform 0.25s ease-out}.nav-links a:hover::after{transform:scaleX(1);transform-origin:bottom left}footer{background-color:#333;color:white;text-align:center;padding:20px;position:relative;width:100%;bottom:0}.backlinks{margin-top: 10px}.backlinks a{color:#4CAF50;margin:0 10px;text-decoration:none;margin:20px;padding:15px}.backlinks a:hover{text-decoration:underline}