make textarea in My filters tab 100% wide

[tntc4]

please make textarea in "My filters" tab 100% wide.
I have a rules that is too long and everytime I open "My filters" tab I need to resize this textarea.

[Mikey1993]

This can be one of many customizable preferences that uBlock can have in the future.

[tntc4]

for now I'm fix this my write my own Stylish userstyle rule:

@-moz-document url("chrome://ublock/content/3p-filters.html") {
#externalLists {
width: 100%;
border: 1px solid black;
}
}

@-moz-document url("chrome://ublock/content/1p-filters.html") {
#userFilters {
width: 100%;
border: 1px solid black;
}
}