The name read-only property of the CSSPositionTryRule interface represents the name of the position try fallback option specified by the @position-try at-rule's <dashed-ident>.
A string.
The CSS includes a @position-try at-rule with a name of --custom-bottom and three descriptors.
@position-try --custom-bottom {
top: anchor(bottom);
min-width: 100px;
margin-top: 10px;
}const myRules = document.styleSheets[0].cssRules;
const tryOption = myRules[0]; // a CSSPositionTryRule
console.log(tryOption.name); // "--custom-bottom"