Please guide how to make this change

My browser : Firefox 115 (Floorp)
My RES version: 5.22.17
Am I in reddit beta (yes/no): no

What's the problem?

I added the following css snippet to modify the ui (copied and modified from enhancement reddit as i dont have programming knowledge).

body.with-listing-chooser>.content,
body.with-listing-chooser .footer-parent,
.report-button,
.entry .buttons li+li {
    margin-left: 0px !important;
    padding-left: 0px !important;
}

.account-activity-box,
.sidebox.create,
.premium-banner-outer,
body>.listing-chooser,
a[href="/r/popular/"],
a[href="/r/random/"],
a[href="/users/"],
a[href="/r/friends/"],
a[href="/r/mod/"],
a[href="/r/mod/about/modqueue"],
a[href="/user/me/saved"],
a[href="#res:settings/subredditManager"],
a[href="/r/Dashboard/"],
a[href="https://www.reddit.com/wiki/"],
a[href="https://www.reddit.com/gilded/"],
a[href="https://www.reddit.com/chat"],
a[href="https://mod.reddit.com/"],
#RESShortcutsViewport>.sr-bar,
#RESShortcuts>.separator,
.rank,
.buttons.flat-list,
.flair.flaircolordark.flairrichtext,
.access-required.flairselectbtn,
.embed-comment,
.archived-infobar.with-icon.md-container-small.reddit-infobar,
.footer-parent,
.domain {
    display: none !important;
}

.subbarlink,
#mail,
.logout,
a[href="https://www.reddit.com/prefs/"] {
    margin-left: 5px !important;
}

.flat-list>li:not:first-child {
    margin-left: 5px !important;
}

#srLeftContainer,
.author {
    margin-right: 0px !important;
}

What i want to achieve is turn off the button row (such as comments, share, save etc) beneath the post page but remain on the feed/home/subreddit page and possibly assign a keyboard shortcut for it.

Are there any related posts in https://github.com/honestbleeps/Reddit-Enhancement-Suite/issues or /r/RESissues? cant find any

What other browser extensions are installed? i think it is irrelevant

honestbleeps / Reddit-Enhancement-Suite

Please guide how to make this change #5493