mdn-javascript_operators_import_meta">ECMAScript 11 / 2020</a>.
                </li>
                <li>
                    In CSS you can rely on <a href="https://caniuse.com/mdn-css_at-rules_import">@import</a>, <a href="https://caniuse.com/css-variables">variables</a>, 
                    <a href="https://caniuse.com/calc">calc()</a>, <a href="https://caniuse.com/flexbox">flexbox</a>, <a href="https://caniuse.com/css-grid">grid</a>, 
                    <a href="https://caniuse.com/css-display-conten