Bootstrap not working inside pdf
问题 This is my controller code public function actionPrint_death_certificate1() { $this->layout = 'certificate'; $html = $this->render('test'); require_once(Yii::$app->basePath . "/../vendor/mpdf/mpdf/mpdf.php"); $mpdf=new mPDF(); $mpdf->WriteHTML($html); $mpdf->Output(); } My view <div class="container"> <div class="row"> <div class="col-md-6"> Heading1 </div> <div class="col-md-6"> Heading2 </div> </div> </div> Now i get a pdf with heading1 and heading2 in two different lines. Bootstrap is not