The index.html page is the most common name used for the default page shown on a website if no other page is specified when a visitor requests the site. In other words, index.html is the name used for the homepage of the website.
One prime example is the HTMLZ file extension used for Zipped HTML eBook files. There are HTML files inside the HTMLZ file but the format of the whole package is ZIP , which won't open in a web browser or with a text editor.
18 мар 2019 Свойство z-index определяет положение элемента и нижестоящих Примеры. HTML.