Answers for "bootstrap dif flex"

laravel clear cache

php artisan cache:clear
php artisan route:clear
php artisan config:clear 
php artisan view:clear

laravel disable config cache

php artisan cache:clear - Flush the application cache

php artisan config:cache - Create a cache file for faster configuration loading. This is for configuration cache. This command will clear the configuration cache before it creates. More details

php artisan config:clear - Remove the configuration cache file

bootstrap display flex

<div class="d-flex">I'm a flexbox container!</div>