bootstrapのmodalの表示スピードを速くしたかったので、bootstrapのmodalのoptionsで変更できないか調べたが、cssだけで変更できるみたい。 //fade out のスピード .modal.fade { transition-duration: 0.1s; } //fade in のスピード .modal… Of course, using images and JS will only make the modal better, and something like hitting ESC to close will never be reproduced in CSS. We can see a ‘look down’ content written in the front. I got it to close when you click the close button with this code: .tip { z-index: 99999; … I would like to have a content overlay, to grey-out the page contents when a modal opens. I’ve marked up the modal using