Font Awesome SVG icons used with permission: https://fontawesome.com/license

Stack Overflow suggested workaround for implementing SVGs as list-style images in the 'Share with BBC News' section: https://stackoverflow.com/questions/7775594/css-list-style-image-size

Help with building a functional slider using only HTML and CSS from Chris @ CSS-Tricks: https://css-tricks.com/can-get-pretty-far-making-slider-just-html-css/

I learned how to target sibling elements of hovered items for my CSS carousel buttons in the 'Best of BBC iPlayer' footer section here: https://www.trysmudford.com/blog/fade-out-siblings-css-trick/

Tips on how to build the pure CSS3 slide down toggle functionality in the navbar came from here: https://stackoverflow.com/questions/13412054/slide-down-div-on-click-pure-css https://codepen.io/surjithctly/pen/pLDwe

Help with preserving the aspect ratio of iframes and keeping them responsive came from here: https://stackoverflow.com/questions/25302836/responsive-video-iframes-keeping-aspect-ratio-with-only-css