Quick CSS Tips

Image or Gif above MP3:
::-webkit-scrollbar-thumb:hover {
background: #000;
}
.player::before {
content: "";
display: block;
position: relative;
width: calc(40% -20px);
height: 390px;
max-width: 390px;
background-position: 0 0;
background-size: 100% 100%;
background-image: url(IMAGE/ GIF URL);
}

Backgrounds:
}
img {
image-rendering: initial;
}
body {
background-image: url(IMAGE/ GIF URL);
}
body {
text-align: center;
}

Any Cursor:
http://www.cursors-4u.com/