This Kirby Plugin allows to convert the col spans of Kirby to Tailwind Compatible classes.

index.php

<?php

Kirby::plugin('cb/layout-tailwind', []);

if (!function_exists('kirbySpanToCols')) {
    function kirbySpanToCols(string $span, int $gridCols = 12): int
    {
        if (strpos($span, '/') === false) {
            return $gridCols;
        }

        [$num, $den] = array_map('intval', explode('/', $span, 2));

        if ($num <= 0 || $den <= 0) {
            return $gridCols;
        }

        $cols = (int) round($gridCols * ($num / $den));
        return max(1, min($gridCols, $cols));
    }
}

if (!function_exists('kirbyColumnClass')) {
    function kirbyColumnClass(string $span, int $gridCols = 12, string $bp = 'md'): string
    {
        $cols = kirbySpanToCols($span, $gridCols);
        return "col-span-12 {$bp}:col-span-{$cols}";
    }
}