woocommerce/assets/css/photoswipe/photoswipe.css

/**
 * WooCommerce Photoswipe styles.
 * 1. These styles are required to overwrite default theme button styles (Twenty Twelve adds gradients via background-image).
 * 2. For zooming on mobile.
 */
.woocommerce img.pswp__img,
.woocommerce-page img.pswp__img {
	max-width: none; /* 2 */
}
button.pswp__button {
	box-shadow: none !important;
	background-image: url('default-skin/default-skin.png') !important;
}
button.pswp__button,
button.pswp__button:hover,
button.pswp__button--arrow--left::before,
button.pswp__button--arrow--right::before {
	background-color: transparent !important; /* 1 */
}
button.pswp__button--arrow--left,
button.pswp__button--arrow--right,
button.pswp__button--arrow--left:hover,
button.pswp__button--arrow--right:hover {
	background-image: none !important; /* 1 */
}
button.pswp__button--close:hover {
	background-position: 0 -44px;
}
button.pswp__button--zoom:hover {
	background-position: -88px 0;
}

/*! PhotoSwipe main CSS by Dmitry Semenov | photoswipe.com | MIT license */
/*
	Styles for basic PhotoSwipe functionality (sliding area, open/close transitions)
*/
/* pswp = photoswipe */
.pswp {
  display: none;
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  top: 0;
  overflow: hidden;
  -ms-touch-action: none;
  touch-action: none;
  z-index: 1500;
  -webkit-text-size-adjust: 100%;
  /* create separate layer, to avoid paint on window.onscroll in webkit/blink */
  -webkit-backface-visibility: hidden;
  outline: none; }
  .pswp * {
    -webkit-box-sizing: border-box;
            box-sizing: border-box; }
  .pswp img {
    max-width: none; }

  /* adjust for admin bar */
  .admin-bar .pswp {
    height: calc(100% - 32px);
    top: 32px;
  }
  @media screen and (max-width: 782px) {
    .admin-bar .pswp {
      height: calc(100% - 46px);
      top: 46px;
    }
  }

/* style is added when JS option showHideOpacity is set to true */
.pswp--animate_opacity {
  /* 0.001, because opacity:0 doesn't trigger Paint action, which causes lag at start of transition */
  opacity: 0.001;
  will-change: opacity;
  /* for open/close transition */
  -webkit-transition: opacity 333ms cubic-bezier(0.4, 0, 0.22, 1);
          transition: opacity 333ms cubic-bezier(0.4, 0, 0.22, 1); }

.pswp--open {
  display: block; }

.pswp--zoom-allowed .pswp__img {
  /* autoprefixer: off */
  cursor: -webkit-zoom-in;
  cursor: -moz-zoom-in;
  cursor: zoom-in; }

.pswp--zoomed-in .pswp__img {
  /* autoprefixer: off */
  cursor: -webkit-grab;
  cursor: -moz-grab;
  cursor: grab; }

.pswp--dragging .pswp__img {
  /* autoprefixer: off */
  cursor: -webkit-grabbing;
  cursor: -moz-grabbing;
  cursor: grabbing; }

/*
	Background is added as a separate element.
	As animating opacity is much faster than animating rgba() background-color.
*/
.pswp__bg {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: #000;
  opacity: 0;
  -webkit-transform: translateZ(0);
          transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  will-change: opacity; }

.pswp__scroll-wrap {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  overflow: hidden; }

.pswp__container,
.pswp__zoom-wrap {
  -ms-touch-action: none;
  touch-action: none;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0; }

/* Prevent selection and tap highlights */
.pswp__container,
.pswp__img {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
      user-select: none;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none; }

.pswp__zoom-wrap {
  position: absolute;
  width: 100%;
  -webkit-transform-origin: left top;
  -ms-transform-origin: left top;
  transform-origin: left top;
  /* for open/close transition */
  -webkit-transition: -webkit-transform 333ms cubic-bezier(0.4, 0, 0.22, 1);
          transition: transform 333ms cubic-bezier(0.4, 0, 0.22, 1); }

.pswp__bg {
  will-change: opacity;
  /* for open/close transition */
  -webkit-transition: opacity 333ms cubic-bezier(0.4, 0, 0.22, 1);
          transition: opacity 333ms cubic-bezier(0.4, 0, 0.22, 1); }

.pswp--animated-in .pswp__bg,
.pswp--animated-in .pswp__zoom-wrap {
  -webkit-transition: none;
  transition: none; }

.pswp__container,
.pswp__zoom-wrap {
  -webkit-backface-visibility: hidden; }

.pswp__item {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  overflow: hidden; }

.pswp__img {
  position: absolute;
  width: auto;
  height: auto;
  top: 0;
  left: 0; }

/*
	stretched thumbnail or div placeholder element (see below)
	style is added to avoid flickering in webkit/blink when layers overlap
*/
.pswp__img--placeholder {
  -webkit-backface-visibility: hidden; }

/*
	div element that matches size of large image
	large image loads on top of it
*/
.pswp__img--placeholder--blank {
  background: #222; }

.pswp--ie .pswp__img {
  width: 100% !important;
  height: auto !important;
  left: 0;
  top: 0; }

/*
	Error message appears when image is not loaded
	(JS option errorMsg controls markup)
*/
.pswp__error-msg {
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  text-align: center;
  font-size: 14px;
  line-height: 16px;
  margin-top: -8px;
  color: #CCC; }

.pswp__error-msg a {
  color: #CCC;
  text-decoration: underline; }