chromium/chrome/browser/resources/pdf/elements/viewer_zoom_toolbar.css

/* Copyright 2024 The Chromium Authors
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file. */

/* #css_wrapper_metadata_start
 * #type=style-lit
 * #css_wrapper_metadata_end */

:host {
  --button-position-offset: 24px;
  bottom: 0;
  left: 0;
  padding: 48px 0;
  position: fixed;
  right: auto;
  user-select: none;
  z-index: 3;
}

:host-context([dir='rtl']) {
  left: auto;
  right: 0;
}

#zoom-buttons {
  left: var(--button-position-offset);
  opacity: 1;
  position: relative;
  right: auto;
  transition: opacity 250ms;
  transition-timing-function: cubic-bezier(0, 0, 0.2, 1);
}

:host-context([dir='rtl']) #zoom-buttons {
  left: auto;
  right: var(--button-position-offset);
}

:host(:not([visible_])) #zoom-buttons {
  opacity: 0;
  transition-timing-function: cubic-bezier(0.4, 0, 1, 1);
}

viewer-zoom-button {
  display: block;
}

/* A larger gap between the fit button and the bottom two zoom buttons. */
#zoom-in-button {
  margin-top: 24px;
}

/* A small gap between the zoom in/zoom out buttons. */
#zoom-out-button {
  margin-top: 10px;
}