> The tiny 10px votearrow

Yeah, I constantly mis click that.

Just wrote myself a user style for URLs beginning with https://news.ycombinator.com/item (Not tested on other displays):

.votearrow { width: 14pt; height: 14pt; background-size: 10pt; background-repeat: no-repeat; margin-top: -1pt; }

.comhead, .default, .reply a, .subtext, .comment, p { font-size: 10pt !important; }

.title, .default, .default > div { padding-top: 0 !important; margin-top: 0 !important; vertical-align: top; }

.athing.comtr { display: block; margin-top: 10px !important; }

.reply u, .reply a { text-decoration: none !important; color: #828282; }

.reply a:hover { text-decoration: underline !important; }