MediaWiki:Common.css

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#ca-history {
    display: none !important;
}

#p-tb {
    display: none !important;
}
<head>
    <meta name="google-adsense-account" content="ca-pub-9623793068560892">
</head>

#p-logo a {
    background-image: url('https://madeinbhutan.com/images/8/85/Bhutan.png');
    background-size: contain;
    #width: 135px;  /* Adjust the width as needed */
    #height: 135px; /* Adjust the height as needed */
}