stacker.news/components/upvote.module.css

.upvote {
    fill: #a5a5a5;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

.boost {
    fill: var(--theme-clickToContextColor);
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

.upvoteWrapper {
    position: relative;
    padding-right: .2rem;
    padding-left: .2rem;
    margin-left: -.4rem;
}

.noSelfTips {
    transform: scaleX(-1);
}

.upvoteWrapper:not(.noSelfTips):hover {
    cursor: pointer;
}

.upvote.voted {
    fill: #F6911D;
    filter: drop-shadow(0 0 6px #f6911d90);
}

.cover {
    background: var(--bs-body-bg);
    width: 100%;
    overflow: hidden;
    mix-blend-mode: color;
    position: absolute;
    left: 4px;
    width: 17px;
}

.pending {
    animation-name: pulse;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
    animation-duration: 0.25s;
    animation-direction: alternate;
}

@keyframes pulse {
	0% {
		fill: #a5a5a5;
	}
}