gecko/browser/base/content/newtab/newTab.css

:root {
  -moz-appearance: none;
}

#scrollbox:not([page-disabled]) {
  overflow: auto;
}

#body {
  position: relative;
  margin: 0;
  min-width: 675px;
  -moz-user-select: none;
}

.button {
  cursor: pointer;
}

/* TOOLBAR */
#toolbar {
  position: absolute;
}

#toolbar[page-disabled] {
  position: fixed;
}

#toolbar:-moz-locale-dir(rtl) {
  left: 8px;
  right: auto;
}

.toolbar-button {
  position: absolute;
  cursor: pointer;
  -moz-transition: opacity 200ms ease-out;
}

#toolbar-button-show,
#toolbar-button-reset {
  opacity: 0;
  pointer-events: none;
}

#toolbar-button-reset[modified],
#toolbar-button-show[page-disabled] {
  opacity: 1;
  pointer-events: auto;
}

#toolbar-button-hide[page-disabled],
#toolbar-button-reset[page-disabled] {
  opacity: 0;
  pointer-events: none;
}

/* GRID */
#grid {
  width: 637px;
  height: 411px;
  overflow: hidden;
  list-style-type: none;
  -moz-transition: opacity 200ms ease-out;
}

#grid[page-disabled] {
  opacity: 0;
}

#grid[page-disabled],
#grid[locked] {
  pointer-events: none;
}

/* CELLS */
.cell {
  float: left;
  width: 201px;
  height: 127px;
  margin-bottom: 15px;
  -moz-margin-end: 16px;
}

.cell:-moz-locale-dir(rtl) {
  float: right;
}

.cell:nth-child(3n+3) {
  -moz-margin-end: 0;
}

/* SITES */
.site {
  display: block;
  position: relative;
  width: 201px;
  height: 127px;
}

.site[frozen] {
  position: absolute;
  pointer-events: none;
}

.site[ontop] {
  z-index: 10;
}

/* SITE IMAGE */
.site-img {
  display: block;
  opacity: 0.75;
  -moz-transition: opacity 200ms ease-out;
}

.site:hover > .site-img,
.site[ontop] > .site-img,
.site:-moz-focusring > .site-img {
  opacity: 1;
}

.site-img[loading] {
  display: none;
}

/* SITE TITLE */
.site-title {
  position: absolute;
  left: 0;
  bottom: 0;
  overflow: hidden;
}

/* SITE STRIP */
.site-strip {
  position: absolute;
  left: 0;
  top: 0;
  width: 195px;
  height: 17px;
  overflow: hidden;
  opacity: 0;
  -moz-transition: opacity 200ms ease-out;
}

.site:hover:not([frozen]) > .site-strip {
  opacity: 1;
}

.strip-button-pin,
.strip-button-block:-moz-locale-dir(rtl) {
  float: left;
}

.strip-button-block,
.strip-button-pin:-moz-locale-dir(rtl) {
  float: right;
}

/* DRAG & DROP */

/*
 * This is just a temporary drag element used for dataTransfer.setDragImage()
 * so that we can use custom drag images and elements. It needs an opacity of
 * 0.01 so that the core code detects that it's in fact a visible element.
 */
.drag-element {
  width: 1px;
  height: 1px;
  background-color: #fff;
  opacity: 0.01;
}