table content pictogram css

 .table-container th.asc:after {
    content: '\0000a0\0025bc';
    float: left;
}

I found it in GitHub’s project, but Google didn’t give me answer what ‘\0000a0\0025bc’ is.

>Solution :

\0000a0\0025bc is a sequence of Unicode escape characters that represents the "downward-pointing triangle" character (▼)