.hero-bg{background-size:cover;background-position:center;background-repeat:no-repeat;animation:change-bg 15s infinite}@keyframes change-bg{0%{background-image:url('https://clubcircle.nl/wp-content/uploads/2025/02/1-1.png')}33%{background-image:url('https://clubcircle.nl/wp-content/uploads/2025/02/3-1.png')}66%{background-image:url('https://clubcircle.nl/wp-content/uploads/2025/02/2-1.png')}100%{background-image:url('https://clubcircle.nl/wp-content/uploads/2025/02/1-1.png')}}.custom-header{position:absolute;width:100%;top:0;left:0;z-index:9999;background:transparent;transition:background 0.3s ease-in-out}.custom-header.scrolled{position:fixed;background:rgba(0,0,0,0.9)}