gecko/toolkit/themes/winstripe/global/dirListing/dirListing.css

:root {
  background-color: -moz-dialog;
  color: -moz-dialogtext;
  font: message-box;
}

body {
  border: 1px solid ThreeDShadow;
  -moz-border-radius: 10px;
  padding: 3em;
  min-width: 13em;
  max-width: 52em;
  margin: 4em auto;
  background-color: -moz-field;
  color: -moz-fieldtext;
}

h1 {
  font-size: 160%;
  margin: 0 0 .6em;
  border-bottom: 1px solid ThreeDLightShadow;
  font-weight: normal;
}

a {
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

p {
  font-size: 110%;
}

#UI_goUp {
  margin-top: 0;
  float: left;
}

#UI_showHidden {
  margin-top: 0;
  float: right;
}

#UI_showHidden:not(:hover) {
  color: graytext;
}

table {
  clear: both;
  width: 90%;
  margin: 0 auto;
}

thead {
  font-size: 130%;
}

th {
  font-weight: normal;
}

th:first-child ,
th:first-child + th {
  padding-right: 2em;
}

table[order] th:hover {
  text-decoration: underline;
}

tbody > tr:not(:hover) > td:not(:first-child) {
  color: graytext;
}

/* let 'Size' and 'Last Modified' take only as much space as they need and 'Name' all the rest */
td:first-child + td ,
td:first-child + td + td ,
td:last-child {
  width: 0;
}

.up ,
.dir ,
.symlink ,
.file {
  padding: 0 .5em;
  margin-left: 20px;
}

.up::before ,
.dir::before ,
.file > img {
  margin-right: 4px;
  margin-left: -20px;
  opacity: .6;
  vertical-align: middle;
}

.up::before {
  content: url(chrome://global/skin/dirListing/up.png);
}

.up:hover::before ,
tr:hover > td > a::before ,
tr:hover > td > .file > img {
  opacity: 1;
}