查看“︁MediaWiki:Common.css”︁的源代码

/* 这里放置的CSS将应用于所有皮肤 */
/* this will 'replace' the login text with the Eve SSO Login Image */
/* Style oAuth Login link with 'LOG IN with EVE Online' image */
li#pt-login > a {
    background-image: url(https://web.ccpgamescdn.com/eveonlineassets/developers/eve-sso-login-black-small.png);
    display: inline-block;
    margin: auto;
    text-indent: -9999px;
    width: 195px;
    height: 30px;
}