header a[class*="appsmith-logo"] img {
    display:none !important;
}

header a[class*="appsmith-logo"]{
    position:relative !important;
    width:190px !important;
    height:40px !important;
    display:inline-block !important;
}

header a[class*="appsmith-logo"]::before{
    content:"" !important;
    position:absolute !important;
    left:0 !important;
    top:0 !important;
    width:190px !important;
    height:40px !important;
    background:url("/appsmith-logo.svg") no-repeat left center !important;
    background-size:contain !important;
}