charset: keep omitted top border width

Hiding collapsed top border affects the entire row, making it impossible to
combine with other columns.  An invisible border looks the same but does
allow mixed usage.

diff --git a/base.css b/base.css
index 3096be012e70e5253774542b8521fb2b56037513..179b2ec2c63f750ef5a6372e45c14740cca72c79 100644 (file)
--- a/base.css
+++ b/base.css
@@ -213,7 +213,8 @@ td.joind {
        border-bottom: none;
 }
 td.joinu {
        border-bottom: none;
 }
 td.joinu {

-       border-top: none;
+       /* first cell determines border width for entire row */
+       border-top-color: transparent;

 }
 td.joinr {
        border-right: none;
 }
 td.joinr {
        border-right: none;