stylus/popup.css

body {
  width: 200px;
  font-size: 13px;
  font-family: Arial,"Helvetica Neue",Helvetica,sans-serif;
}
input[type=checkbox] {
  outline: none;
}
#disable-all-wrapper {
  padding: 0.2em 0 0.7em;	
}
#disable-all-wrapper .main-controls {
  padding-top: 0.1em;
}
#no-styles {
  font-style: italic;
}
#popup-shortcuts-button {
  margin-left: 3px;
}
.checker {
  display: inline;
}
.style-name {
  cursor: default;
  font-weight: bold;
  margin-bottom: 2px;
  display: block;
}
.actions {
  font-size: x-small;
}
a, a:visited {
  color: black;
}

.left-gutter {
  display: table-cell;
  width: 16px;
  vertical-align: top;
}
.left-gutter input {
  margin-top: 0;
  margin-left: 0;
}
.main-controls {
  display: table-cell;
}

.entry {
  padding: 0.5em 0;
  border-bottom: 1px solid black;
}
.entry:first-child {
  padding-top: 0;
}
.entry:last-child {
  border-bottom: none;
}
body > DIV {
  border-bottom: 1px solid black;
  padding-bottom: 2px;
}
body > DIV:last-of-type,
body.blocked > DIV {
  border-bottom: none;
}
#installed {
  margin-top: 0.5em;
}
#installed.disabled .style-name {
  text-decoration: line-through;
}
#installed .actions a {
  margin-right: 0.2em;
}
body > .actions {
  margin-top: 0.5em;
}

.actions > div:not(:last-child):not(#disable-all-wrapper), .actions > .main-controls > div:not(:last-child), #unavailable:not(:last-child), #unavailable + .actions {
  margin-bottom: 0.75em;
}
.actions input, .actions label {
  vertical-align: middle;
}

#unavailable {
  border: none;
  display: none;
  font-size: 14px;
  text-indent: 6px;
}
body.blocked #installed,
body.blocked #find-styles,
body.blocked #write-style,
body:not(.blocked) #unavailable {
  display: none;
}

/* Never shown, but can be enabled with a style */
.enable, .disable {
  display: none;
}

/* 'New style' links */
#write-style-for {margin-right: .6ex}
.write-style-link {margin-left: .6ex}
.write-style-link::before, .write-style-link::after {font-size: x-small}
.write-style-link::before {content: "\00ad"} /* "soft" hyphen */
#match {overflow-wrap: break-word;}

/* "breadcrumbs" 'new style' links */
.breadcrumbs > .write-style-link {margin-left: 0}
.breadcrumbs:hover a {color: #bbb; text-decoration: none}

  /* use just the subdomain name instead of the full domain name */
.breadcrumbs > .write-style-link[subdomain]:not(:nth-last-child(2)) {font-size: 0}
.breadcrumbs > .write-style-link[subdomain]:not(:nth-last-child(2))::before {
  content: attr(subdomain);
}

  /* "dot" after each subdomain name */
.breadcrumbs > .write-style-link[subdomain]::after {content: "."}
  /* no "dot" after top-level domain */
.breadcrumbs > .write-style-link:nth-last-child(2)::after {content: none}
  /* "forward slash" before path ("this URL") */
.breadcrumbs > .write-style-link:last-child::before {content: "\200b/"}
.breadcrumbs > .write-style-link:last-child:first-child::before,
.breadcrumbs > .write-style-link[subdomain=""] + .write-style-link::before {content: none}

  /* suppress TLD-only link */
.breadcrumbs > .write-style-link[subdomain=""] {display: none}

  /* :hover style */
.breadcrumbs.url\(\) > .write-style-link, /* :hover or :focus on "this URL" sets class="url()" */
.breadcrumbs > .write-style-link:hover,
.breadcrumbs > .write-style-link:focus,
.breadcrumbs > .write-style-link:hover ~ .write-style-link[subdomain],
.breadcrumbs > .write-style-link:focus ~ .write-style-link[subdomain] {
  color: inherit;
  text-decoration: underline;
}