On 3/26/25 18:54, Ramiro Aceves wrote:
But those borders are not my problem. My problem are the borders that
are inside the GTK programs like tunderbird, that divide the program
in for example 3 panels. There are very thin lines. In a good working
Thunderbird, when you place the mouse pointer close to the line,
arrows appear to help placing the mouse over the separation line. Once
you have placed precisely the mouse you can adjust line position and
resize panels inside the program. Without the helping arrows is very
tricky to place the mouse accurately over the line.
Try creating a file ~/.config/gtk-3.0/gtk.css with:
separator {
min-width: 6px;
min-height: 6px;
}
But some applications seem to use custom widgets and ignore this. For
Thunderbird you need to create a file ~/.thunderbird/{your-profile}/
chrome/userChrome.css with:
hr[is="pane-splitter"][resize-direction="horizontal"] {
width: 6px !important;
cursor: crosshair !important;
}
hr[is="pane-splitter"][resize-direction="vertical"] {
height: 6px !important;
cursor: crosshair !important;
}