Server : Apache System : Linux server2.corals.io 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 09:17:08 EST 2021 x86_64 User : corals ( 1002) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system Directory :  /home/corals/inventory.corals.io/vendor/sabberworm/php-css-parser/src/Property/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

<?php

namespace Sabberworm\CSS\Property;

class KeyframeSelector extends Selector
{
    /**
     * regexp for specificity calculations
     *
     * @var string
     */
    const SELECTOR_VALIDATION_RX = '/
    ^(
        (?:
            [a-zA-Z0-9\x{00A0}-\x{FFFF}_^$|*="\'~\[\]()\-\s\.:#+>]* # any sequence of valid unescaped characters
            (?:\\\\.)?                                              # a single escaped character
            (?:([\'"]).*?(?<!\\\\)\2)?                              # a quoted text like [id="example"]
        )*
    )|
    (\d+%)                                                          # keyframe animation progress percentage (e.g. 50%)
    $
    /ux';
}