1、CSS Tables

To specify table borders in CSS, use the border property.

The example below specifies a black border for <table>, <th>, and <td> elements:

table, th, td {
     border: 1px solid black;}

Collapse Table Borders

The border-collapse property sets whether the table borders should be collapsed into a single border:

table {
     border-collapse: collapse;}table, th, td {
     border: 1px solid black;}