CSS: TD background color causing borders to disappear

Question

I have a large HTML table that is created dynamically. The table has a standard structure, incl. colgroup, thead and tbody and the below styles.

So far everything works as intended but when I add the class "bgGrey" to the TDs in one column (see below) in order to give the cells in this column a background color (which is only needed on one column) then all borders of this column disappear in IE11, except for the left border, and the :hover::before style doesn't work anymore in Chrome (version 43).
Without adding the class "bgGrey" I have no issues in both browsers.

It seems that somehow the background color overlaps the border causing this.

My CSS (relevant part):

#myTable, #myTable tbody, #myTable thead, #myTable tr {     width: 100%; } #myTable, #myTable th, #myTable td {     border: 1px solid #000;     border-collapse: collapse;     margin: 0;     padding: 4px;     position: relative; } #myTable {     font-size: 14px;     table-layout: fixed; } #myTable th.editable:hover::before, #myTable td.editable:hover::before {     border: 1px solid blue;     content: '';     position: absolute;     top: 0; right: 0; bottom: 0; left: 0;     z-index: -1; } #myTable .th1 {     padding: 2px; } #myTable .th2 {     font-weight: normal; }  .bgGrey {     background-color: #e6e6e6; } 

My HTML (example TR):

<tr>     // ...     <td class="editable"><div contenteditable="true"></div></td>     <td class="bgGrey editable txtCenter"><div contenteditable="true"></div></td>     <td class="editable txtRight"><div contenteditable="true"></div></td>     // ... </tr> 

Answer 1

I just came upon this problem myself, but I didn't like the solution presented here, so I kept googling. I found this answer: https://stackoverflow.com/a/16337203/1156476

Here, a simple addition to the table cell fixes the borders:

table td {   border: 1px solid #000;   border-collapse: collapse;   margin: 0;   padding: 4px;   position: relative;   background-clip: padding-box; /* Add this line */ } 

Check browser support at Caniuse

And an explanation of the property can be found at Standardista