chromium/chrome/browser/resources/intro/default_browser/app.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
 * #import=chrome://intro/tangible_sync_style_shared_lit.css.js
 * #import=chrome://resources/cr_elements/cr_shared_vars.css.js
 * #scheme=relative
 * #include=tangible-sync-style-shared-lit
 * #css_wrapper_metadata_end */

:host {
  --cr-button-height: 36px;
  --btn-container-height:
      calc(2 * var(--btn-margin) + var(--cr-button-height));
  --btn-margin: 24px;
  --default-browser-frame-image-url: url(images/default_browser_frame.svg);
  --left-background-image-url: url(images/left_illustration.svg);
  --right-background-image-url: url(images/right_illustration.svg);
  color: var(--cr-primary-text-color);
}

@media (prefers-color-scheme: dark) {
  :host {
    --default-browser-frame-image-url:
        url(images/default_browser_frame_dark.svg);
    --left-background-image-url: url(images/left_illustration_dark.svg);
    --right-background-image-url: url(images/right_illustration_dark.svg);
  }
}

.title {
  margin: 36px 0 12px;
}

.subtitle {
  margin: 0;
}

.tangible-sync-style-left-banner {
  content: var(--left-background-image-url);
}

.tangible-sync-style-right-banner {
  content: var(--right-background-image-url);
}

.tangible-sync-style-left-banner,
.tangible-sync-style-right-banner {
  position: fixed;
}

#safe-zone {
  box-sizing: border-box;
  display: flex;
  height: calc(100% - var(--btn-container-height));
  justify-content: center;
  overflow-y: auto;
  position: fixed;
  width: 100vw;
}

#content-area {
  align-items: center;
  display: flex;
  flex-direction: column;
  margin: auto;
  text-align: center;
}

#illustration-container {
  --illustration-height: 110px;
  --illustration-margin-top: 50px;
  --illustration-width: 185px;
  --product-logo-size: 52px;
  --product-logo-top: 26px;
  height: var(--illustration-height);
  margin-top: var(--illustration-margin-top);
  position: relative;
  width: var(--illustration-width);
}

@media screen and ((max-width: 780px) or (max-height: 600px)) {
  #illustration-container {
    --illustration-height: 73px;
    --illustration-width: 123px;
    --product-logo-size: 34px;
    --product-logo-top: 17px;
  }
}

#default-browser-frame {
  content: var(--default-browser-frame-image-url);
  height: var(--illustration-height);
  position: absolute;
  top: 0;
  left: 0;
  width: var(--illustration-width);
}

#product-logo {
  height: var(--product-logo-size);
  position: absolute;
  top: var(--product-logo-top);
  left: calc((var(--illustration-width) - var(--product-logo-size)) / 2);
  width: var(--product-logo-size);
}

#button-row {
  bottom: 0;
  display: flex;
  height: var(--btn-container-height);
  justify-content: flex-end;
  position: fixed;
  width: 100vw;
}

#button-container {
  display: flex;
  flex-direction: row;
  gap: 12px;
  justify-content: flex-end;
  padding: 0 var(--btn-margin);
}

<if expr="is_win">
#button-container {
  flex-flow: row-reverse;
}
</if>

#button-container > cr-button {
  margin-top: var(--btn-margin);
}