Template:Infoicon/styles.css

/* Undo mw-parser's addition of a 3px margin to the top of linked images */
.infoicon img {
  margin-top: -3px;
}

/* Add a tiny glow around icons so that that they stick out from the background */
.iconglow img {
  filter: drop-shadow(0 0 1px rgba(255,255,255,.75));
}

/* Prevent line breaks in silly places where desired (nowrap)
   and links when we don't want them to (nowraplinks a) */

.nowrap,
.nowraplinks a {
  white-space: nowrap;
}