piskel/src/css/toolbox-animated-preview.css

/**
 * Animated preview styles.
 */

.preview-container {
  flex-shrink: 0;

  border : 0 Solid black;
  border-radius:5px 0 0 5px;
  box-shadow : 0 0 2px rgba(0,0,0,0.2);
  font-size: 0;
}

.preview-container .canvas-container {
  overflow : hidden;
}

.preview-container canvas {
  border : 0 Solid transparent;
}

.canvas-container .animated-preview-canvas-background {
  position : relative;
  height: 100%;
}

#animated-preview-container {
  background: #333;
  border-radius : 0 0 2px 2px;
  overflow : hidden;
}

.canvas-container-wrapper {
  height :200px;
  width : 200px;
  overflow:hidden;
}

.preview-container .background-image-frame-container {
  height: 100%;
  width: 100%;
  position: relative;
  background-position: center;
}

.display-fps {
  float: left;
  color: #aaa;
  font-size: 12px;
  min-width: 55px;
  vertical-align: bottom;
  line-height: 26px;
}

.range-fps {
  overflow: hidden;
  width: 100px;
  height : 26px;
  margin : 0;
  box-sizing: border-box;
}

.preview-toggle-onion-skin {
  font-size: 2rem;
  color: #aaa;
  float: left;
  line-height: 26px;
  height: 100%;
  padding-left: 5px;
  padding-right: 5px;
  border-right: 1px solid #222;
  transition: 0.2s linear;
  cursor:pointer;
}

.preview-toggle-onion-skin:hover {
  color : white;
}

.preview-toggle-onion-skin-enabled,
.preview-toggle-onion-skin-enabled:hover {
  color : gold;
}

.preview-contextual-actions {
  position : absolute;
  z-index: 500;
  right : 10px;
  top : 10px;

  cursor : pointer;

  opacity: 0;
  transition: 0.3s opacity, 0.3s border-color;
}

.minimap-container:hover .preview-contextual-actions {
  opacity: 1;
}

.original-size-button {
  width : 18px;
  height: 18px;
  line-height: 18px;
  margin: 0 5px;

  border: 2px solid white;
  background-color: rgba(0, 0, 0, 0.3);
  color: white;

  font-size: 10px;
  font-weight: bold;
  font-family: Tahoma;
}

.original-size-button-enabled {
  color: gold;
  border-color: gold;
}

.preview-contextual-action {
  float: left;
}

.open-popup-preview-button {
  border : 2px solid white;
  background-color : rgba(0,0,0,0.3);
}

.open-popup-preview-button:hover {
  border-color: gold;
}

/**
 * The regular image is provided bby the sprite icons.png+icons.css
 */
.icon-minimap-popup-preview-arrow-white:hover {
  background-image: url(../img/icons/minimap/minimap-popup-preview-arrow-gold.png);
  background-position: 0 0;
}