@nomios/web-uikit/dist/components/icon/Icon.css

Nomios' living web UIKit

.icon {
    width: 1em;
    height: 1em; /* Must have an height otherwise it will have an extra space on IE11 */
    display: inline-block;
    vertical-align: middle;
    font-size: 2.4rem;
    transition: fill 0.2s ease, fill-opacity 0.2s ease;
}