== should format at rule import ==
@import "mystyle.css";
@import url("tabs.css") layer(framework.component);
@import url("fineprint.css") print;
@import url("bluish.css") projection, tv;
@import url("narrow.css") handheld and (max-width: 400px);
@import url("fallback-layout.css") supports(not (display: flex));

[expect]
@import "mystyle.css";

@import url("tabs.css") layer(framework.component);

@import url("fineprint.css") print;

@import url("bluish.css") projection, tv;

@import url("narrow.css") handheld and (max-width: 400px);

@import url("fallback-layout.css") supports(not (display: flex));