style.css

<style>
 
/* tumblr */
 
iframe#tumblr_controls, .iframe-controls--desktop {
    -webkit-filter:invert(85%)!important;
    filter:invert(85%)!important;
    white-space:nowrap!important;
    top:5px!important;
    right:5px!important;
    position:fixed!important;
    z-index:999999999!important;
    -webkit-transform:scale(0.6);
    -webkit-transform-origin:100% 0;
    -ms-transform:scale(0.6);
    -ms-transform-origin:100% 0;
    transform:scale(0.6);
    transform-origin:100% 0;
}

#opus a {border:0!important;}
#opus:hover {border-color:#111;}

#tumblr_lightbox, .tmblr-lightbox {background:rgba(255,255,255,0.9)!important; z-index:999999999999!important;}
#tumblr_lightbox img, .tmblr-lightbox img {opacity:0;}
#vignette, .vignette {opacity:0!important;}
 
#tumblr_lightbox_center_image, #tumblr_lightbox_left_image, #tumblr_lightbox_right_image, .lightbox-image {
    box-shadow:0 0 0 transparent!important;
    border-radius:0px!important;
    opacity:1!important;
}
 
#tumblr_lightbox_caption, .lightbox-caption {
    color:#111!important;
    font-size:16px!important;
    font-family:'Computer Modern Serif',serif!important;
    text-shadow:0 0 0 transparent!important;
    font-weight:400!important;
    margin-top:10px!important;
}
 
/* basic styles */

html, body {width:100%; height:100%; margin:0; padding:0;}
 
body {
    background-color:#fff;
    background-attachment:fixed;
    background-repeat:repeat;
    word-wrap:break-word;
    overflow:auto;
    margin:0px;
    color:#111;
    text-align:justify;
    font:normal 1.2em/150% 'Computer Modern Serif',serif;
}
/* experimental dark theme */
@media (prefers-color-scheme: dark) {
  body {
    color: white;
    background: #121212;
  }

  body a {
    color: #ffffff;
  }
  
  a, u, underline {
    border-bottom: 1px solid #fff;
}

::selection {
    color: #121212;
    background: #B3FFE3
    ;
}

    ::-webkit-scrollbar {
width: 8px;
background: #121212;
}

::-webkit-scrollbar-thumb {
background: #f1f1f1;
border-radius: 7px;
}

html {
    scrollbar-color: #f1f1f1 #121212;
    scrollbar-width: thin;
}

}

 
a, u, underline {
    text-decoration:none;
    color:#111;
    transition:0.2s ease-in-out;
}
 
a:hover {color:#111;}
 
i, italic, em{color:#111; text-transform:italic;}
b, bold, strong{color:#111; font-weight:700;}
 
img {border:none;}
img:hover {border:none;}
iframe:hover {border:none;}

small, sub, sup {font-size:1em; line-height:150%;}
h1,h2,h3 {font-weight:bold; line-height:150%;}

h1 {font-size:1.6em;}
h2 {font-size:1.4em;}
h3 {font-size:1.2em;}

h1, h2, h3, p, ol, ul, blockquote, .posts div, .question b {margin:1.5em 0;}
.posts .npf-link-block div {margin:0 0;}

hr {
    color:#111;
    background-color:#111;
    width:100%;
    height:1px;
    margin:2em 0;
    position:relative;
    border:0px solid transparent;
}
 
blockquote {
    margin-left:1.5em;
    display:block;
    border-left:1px solid #111;
    padding:0px 1.5em;
}
 
blockquote img {max-width:100%!important;}
 
pre, code {
    padding:10px;
    display:block;
    font-family:"Computer Modern Typewriter",monospace;
}
 
a, u, underline {border-bottom:1px solid #111;}
a:hover, a:hover u, a:hover underline {border-bottom:1px solid #fff;}

.reblog_head, .reblog_head a {
    font-weight:bold; 
    border-bottom:0 solid transparent!important;
}

.reblog_head > *, .question b {
    display:list-item;
    list-style-type:circle;
    margin-left:20px;
}
 
/* posts */
 
#postmargin {
    margin:0 auto;
    z-index:9999999;
    width:540px;
}
 
.posts {margin:120px 0;}

/* photo & video posts */
 
.tumblr_video_container {width:auto!important; height:auto!important;}
.posts img {max-width:100%;}
.photo,.video {text-align:center;}
.photo a {border-bottoM:0px solid transparent!important;}

[photoset-layout] {grid-gap:4px;}
[photoset-layout] div {cursor:pointer; margin:0;}
 
/* quote, text and link posts */
 
.quote {
    text-align:center;
    font:1.5em/200% 'Computer Modern Sans', sans-serif;
}
 
/* permalinks */
 
.permalink {text-align:center;}    

#permapage {
    padding:15px 20px;
    margin:-25px 0px 15px 0px;
    position:relative;
    z-index:1;
    text-align:center;
}
 
#permatags {
    font-weight:400;
    text-align:center;
}
 
/* audio posts */

.spotify_audio_player {
    height:80px!important;
    width:100%!important;
}

.bandcamp_audio_player {
    height:120px!important;
    width:100%!important;
}

.audio {border-collapse:separate; border:1px solid #111; width:100%;}
.audio td.musicinfo {border-left:1px solid #111; padding:0 1em;}
.audio td.playercontainer {padding:0 2em; width:20px;}
 
.tplayer {
    width:20px;
    height:30px;
    overflow:hidden;
    position:relative;
	margin:0px 5px;
    z-index:1;
}

.tplayer div {margin:0;}

.tumblr_audio_player {
    max-width:500px!important;
    margin-left:-7px!important;
    margin-top:2px!important;
}

/* chat posts */
 
.label span {font-weight:bold;}

/* notes */

ol.notes {list-style-type:circle;}
ol.notes li.note img.avatar {display:none!important;}
.clear {margin:0;}

/* header & footer */

header,footer {width:540px; margin:120px auto;}

header h1 {margin-bottom:1em;}

header nav {margin-top:1em; text-transform:capitalize;}
header nav a {margin-right:0.5em;}

footer {text-align:center;}
footer a, footer span {border-bottom:0 solid transparent!important; margin:0 2em;}

@media screen and (max-width:640px){
    body {font-size:1em;}
    #postmargin, header, footer {width:90vw;}
    .musicinfo {width:calc(90vw - 105px);}
}

@media screen and (min-width:1440px){
    #postmargin, header, footer {width:700px;}
    .musicinfo {width:595px;}
}
 
{CustomCSS}
</style>
 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="https://static.tumblr.com/p0knose/Uvepp99oy/modified_photosets.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/fitvids/1.2.0/jquery.fitvids.min.js"></script>
 
<script>
$(document).ready(function(){
    var color = '#111';
    $('.soundcloud_audio_player').each(function(){
        $(this).attr({ src: $(this).attr('src').split('&')[0] + '&amp;liking=false&amp;sharing=false&amp;auto_play=false&amp;show_comments=false&amp;continuous_play=false&amp;buying=false&amp;show_playcount=false&amp;show_artwork=true&amp;origin=tumblr&amp;color=' + color.split('#')[1], height: 20, width: '100%' });
    });
    $('iframe.tumblr_audio_player').load(function(){
        $(this).contents().find("head").append("<style type='text/css'> .audio-player {background:transparent!important;} .icon {color:#111!important;} </style>");
    });
    initPhotosets();
    $(".posts").fitVids({customSelector:"iframe[src*='www.tumblr.com/video']"});
    $('.photolight').click(function(e){
        var lbArray = [];
        var arrayContents = {"width":$(this).data('width'), "height":$(this).data('height'), "low_res":$(this).data("lowres"), "high_res":$(this).data('highres')};
        lbArray.push(arrayContents);
        Tumblr.Lightbox.init(lbArray,1);
        $('body').toggleClass('tumblr_lightbox_active');
        e.preventDefault();
    });
});
</script>