>>101First thing's first.
On line 83 of that PB, you have padding-right as -6px, and it doesn't go through, because it doesn't take negative values.
For your spoiler issues, change the .spoiler classes like so:
.spoiler:not(td) {
background-color: #0015FF !important;
color: #0015FF !important;
}
.spoiler:hover:not(td) {
color: #FFFFFF !important;
} And for your watch thread issue, just erase the space you have between ".watchthread" and ":hover"