<span class="hljs-selector-tag">body</span> {
 <span class="hljs-attr">--text-color</span>: red;
 <span class="hljs-attribute">color</span>: <span class="hljs-built_in">var</span>(--text-color);
}

<span class="hljs-selector-tag">body</span> {
 <span class="hljs-attr">--textBlue</span>: blue;
 <span class="hljs-attribute">color</span>: <span class="hljs-built_in">var</span>(--textBlue);
}