html,bootstrap,chrome,html5,javascript,The right border of the drop-down box in Bootstrap disappears
![Missing border radius on input group with validation feedback · Issue #25110 · twbs/bootstrap · GitHub Missing border radius on input group with validation feedback · Issue #25110 · twbs/bootstrap · GitHub](https://user-images.githubusercontent.com/23639869/34426369-e70a858c-ec35-11e7-86f4-f178276e1f6e.png)
Missing border radius on input group with validation feedback · Issue #25110 · twbs/bootstrap · GitHub
Responsive tables with table-bordered inside a panel have a double border on small devices (under 768px). · Issue #11712 · twbs/bootstrap · GitHub
![css - Bootstrap weird behavior on screen width smaller than 480px - OStack Q&A-Knowledge Sharing Community css - Bootstrap weird behavior on screen width smaller than 480px - OStack Q&A-Knowledge Sharing Community](https://i.stack.imgur.com/lKrLP.jpg)