/*! HTML5 Boilerplate v8.0.0 | MIT License | https://html5boilerplate.com/ */

/* main.css 2.1.0 | MIT License | https://github.com/h5bp/main.css#readme */
/*
 * What follows is the result of much research on cross-browser styling.
 * Credit left inline and big thanks to Nicolas Gallagher, Jonathan Neal,
 * Kroc Camen, and the H5BP dev community and team.
 */

/* ==========================================================================
   Base styles: opinionated defaults
   ========================================================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  color: #222;
  font-size: 1em;
  line-height: 1.4;
	scroll-behavior: smooth;
	}

html, body {
	height: 100%;
}

h1 {
  
}

/*
 * Remove text-shadow in selection highlight:
 * https://twitter.com/miketaylr/status/12228805301
 *
 * Vendor-prefixed and regular ::selection selectors cannot be combined:
 * https://stackoverflow.com/a/16982510/7133471
 *
 * Customize the background color to match your design.
 */

::-moz-selection {
  background: #b3d4fc;
  text-shadow: none;
}

::selection {
  background: #b3d4fc;
  text-shadow: none;
}

/*
 * A better looking default horizontal rule
 */

hr {
  display: block;
  height: 1px;
  border: 0;
  border-top: 1px solid #ccc;
  margin: 1em 0;
  padding: 0;
}

/*
 * Remove the gap between audio, canvas, iframes,
 * images, videos and the bottom of their containers:
 * https://github.com/h5bp/html5-boilerplate/issues/440
 */

audio,
canvas,
iframe,
img,
svg,
video {
  vertical-align: middle;
}

/*
 * Remove default fieldset styles.
 */

fieldset {
  border: 0;
  margin: 0;
  padding: 0;
}

/*
 * Allow only vertical resizing of textareas.
 */

textarea {
  resize: vertical;
}

/* ==========================================================================
   Author's custom styles
   ========================================================================== */

/* master ------------------------------------------------------------------------------------------*/

html {
  color: #000;
  scroll-behavior: smooth;
}

body {
  font-size: 18px;
  margin: auto;
  max-width: 960px;
}

/* header ---------------------------------------------------------------------------------------------*/

.header {
  align-items: center;
  display: flex;
  flex-direction: column;  
}

.header-title {
  margin: auto;
  
  /*border: 1px solid red;*/
}

.header-navigation {
  display: flex;
  justify-content: space-between;
  width: 100%;
  
  /*border: 1px solid blue;*/
}

/* links -----------------------------------------------------------------------------------------*/

.menu a:link, .menu a:visited, .footer a:link, .footer a:visited {
  color: #000;
}

.menu a:hover, .menu a:focus, .active {
  background-image: linear-gradient(to bottom left, #AAA, #777);
  color: #EEE;
}

/* menu button -----------------------------------------------------------------------------------------*/

.menu-button {
  cursor: pointer;
  padding: 6px;
  text-decoration: none;
  width: 40px;
}

.menu-button:hover .bar, .menu-button:focus .bar, .menu-button:active .bar {
  background-color: #EEE;
}

.bar {
  height: 2px;
  width: 20px;
  background: #000;
  margin: 3px auto;
  transition: all 0.3s ease-in-out;
}

.is-active .top {
  transform: translateY(5px) rotateZ(45deg);
}

.is-active .middle {
  width: 0;
}

.is-active .bottom {
  transform: translateY(-5px) rotateZ(-45deg);
}

/* something else -----------------------------------------------------------------------------------------*/

.body-container {
	border: 2px solid red;
	align-items: center;
	display: flex;
	flex-direction: column;
	height: 100vh;
}

.main-header {
	align-items: center;
	flex: initial;
}

.main-article {
	border: 1px solid blue;
	
	display: flex;
	flex: 1;
	flex-direction: column;
	flex-wrap: wrap;
	overflow: auto;
	scroll-snap-type: both mandatory;
	width: 100%;
}

.horizontal-box, .vertical-box {
	align-items: center;
	display: flex;
	flex-wrap: wrap;
	height: 100%;
	justify-content: center;
	overflow: auto;
	scroll-snap-align: start;
	scroll-snap-stop: always;
	scroll-snap-type: both mandatory;
	width: 100%;
}

.horizontal-box {
	background-color: deepskyblue;
	border: 1px solid green;
	
	flex-direction: row;
}

.vertical-box {
	background-color: cornflowerblue;
	border: 1px solid orange;
	
	flex-direction: column;
}

.vertical-box p {
	position: absolute;
	top: 0;
	left: 0;
}

picture {
	display: block;
	padding: 10px;
	height: 100%;
	width: 100%;
}

.full-width-picture {
	border: 5px solid #ccc;
	border-radius: 5px;

	width: 100%;
	height: 100%;
	object-fit: cover;
}


.main-footer {
	flex: initial;
}

/* ==========================================================================
   Helper classes
   ========================================================================== */

/*
 * Hide visually and from screen readers
 */

.hidden,
[hidden] {
  display: none !important;
}

/*
 * Hide only visually, but have it available for screen readers:
 * https://snook.ca/archives/html_and_css/hiding-content-for-accessibility
 *
 * 1. For long content, line feeds are not interpreted as spaces and small width
 *    causes content to wrap 1 word per line:
 *    https://medium.com/@jessebeach/beware-smushed-off-screen-accessible-text-5952a4c2cbfe
 */

.sr-only {
  border: 0;
  clip: rect(0, 0, 0, 0);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  white-space: nowrap;
  width: 1px;
  /* 1 */
}

/*
 * Extends the .sr-only class to allow the element
 * to be focusable when navigated to via the keyboard:
 * https://www.drupal.org/node/897638
 */

.sr-only.focusable:active,
.sr-only.focusable:focus {
  clip: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  position: static;
  white-space: inherit;
  width: auto;
}

/*
 * Hide visually and from screen readers, but maintain layout
 */

.invisible {
  visibility: hidden;
}

/*
 * Clearfix: contain floats
 *
 * For modern browsers
 * 1. The space content is one way to avoid an Opera bug when the
 *    `contenteditable` attribute is included anywhere else in the document.
 *    Otherwise it causes space to appear at the top and bottom of elements
 *    that receive the `clearfix` class.
 * 2. The use of `table` rather than `block` is only necessary if using
 *    `:before` to contain the top-margins of child elements.
 */

.clearfix::before,
.clearfix::after {
  content: " ";
  display: table;
}

.clearfix::after {
  clear: both;
}

/* ==========================================================================
   EXAMPLE Media Queries for Responsive Design.
   These examples override the primary ('mobile first') styles.
   Modify as content requires.
   ========================================================================== */

@media only screen and (min-width: 35em) {
  /* Style adjustments for viewports that meet the condition */
}

@media print,
  (-webkit-min-device-pixel-ratio: 1.25),
  (min-resolution: 1.25dppx),
  (min-resolution: 120dpi) {
  /* Style adjustments for high resolution devices */
}

/* ==========================================================================
   Print styles.
   Inlined to avoid the additional HTTP request:
   https://www.phpied.com/delay-loading-your-print-css/
   ========================================================================== */

@media print {
  *,
  *::before,
  *::after {
    background: #fff !important;
    color: #000 !important;
    /* Black prints faster */
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

  a[href]::after {
    content: " (" attr(href) ")";
  }

  abbr[title]::after {
    content: " (" attr(title) ")";
  }

  /*
   * Don't show links that are fragment identifiers,
   * or use the `javascript:` pseudo protocol
   */
  a[href^="#"]::after,
  a[href^="javascript:"]::after {
    content: "";
  }

  pre {
    white-space: pre-wrap !important;
  }

  pre,
  blockquote {
    border: 1px solid #999;
    page-break-inside: avoid;
  }

  /*
   * Printing Tables:
   * https://web.archive.org/web/20180815150934/http://css-discuss.incutio.com/wiki/Printing_Tables
   */
  thead {
    display: table-header-group;
  }

  tr,
  img {
    page-break-inside: avoid;
  }

  p,
  h2,
  h3 {
    orphans: 3;
    widows: 3;
  }

  h2,
  h3 {
    page-break-after: avoid;
  }
}