查看“︁MediaWiki:Common.css”︁的源代码

/* 这里放置的CSS将应用于所有皮肤 */
.vector-body img {
    width: 100%;
	height: 100%;
	object-fit: contain;
}

.mw-logo {
  position: relative;
}
.mw-logo-icon {
  width: 30px;
  height: 30px;
}
.mw-logo:before {
    content: '';
    background-image: url(https://wiki.tianxia.world//w/images/c/c9/Logo.png);
    width: 180px;
    height: 100px;
    background-repeat: no-repeat;
    background-size: 120px auto;
    position: absolute;
    top: -24px;
    left: -20px;
}
.mw-logo-container {
    float: left;
    margin-left: 110px;
}