css If you select the first th of the first line of <table class="aaa">
Reply to discussion (solution)
.aaa th:first-child
.aaa table>th
CSS adjacent selector and first-child are not supported by many browsers
Setting class Then choose! Adjacent selector IE support is not good!
CSS adjacent selector and first-child are not supported by many browsers
Then change to jquery, percentage support.
$('.aaa th:first').css(...);
Or add css rules directly to the first th.
<th >