Responsive tables with table-bordered inside a panel have a double border on small devices (under 768px). · Issue #11712 · twbs/bootstrap · GitHub
![html - Create a border around div with top-border going through header and bottom-border going through button - Stack Overflow html - Create a border around div with top-border going through header and bottom-border going through button - Stack Overflow](https://i.stack.imgur.com/sYEPu.png)
html - Create a border around div with top-border going through header and bottom-border going through button - Stack Overflow
![css - (Bootstrap 4) Card borders rendered bad/different when used together with bg-color - Stack Overflow css - (Bootstrap 4) Card borders rendered bad/different when used together with bg-color - Stack Overflow](https://i.stack.imgur.com/w51je.png)