Answers for "justify for bootstrap"

laravel clear cache

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

clear cache without using composer in laravel 8

Route::get('/clear-cache', function() {
    $exitCode = Artisan::call('cache:clear');
    // return what you want
});

bootstrap display flex

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