/**
 * Registered graphical icons use the same one-em box as Font Awesome.
 * The trusted image path is supplied by the shared icon registry at render time.
 */
i.fa-custom {
    background-image: var(--custom-icon-image, none);
    background-position: center center;
    background-repeat: no-repeat;
    background-size: contain;
    display: inline-block;
    height: 1em;
    line-height: 1;
    text-align: center;
    vertical-align: baseline;
    width: 1em;
}

i.fa-custom[data-icon-text]::before {
    content: attr(data-icon-text);
    font-family: Arial, sans-serif;
    font-size: 1em;
    line-height: 1;
}