html, body {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  font-family: Helvetica, "Times Roman", sans-serif;
  font-weight: bold;
  line-height: 1.5;
}

body {
  background-image: url("https://s3.eu-central-1.amazonaws.com/languagelighthouse/Photos/brickwallTransparent03a.jpg");
  /**background-size: cover;**/
 /** background-repeat: repeat-x;**/
  background-position: left top;
  margin: 0;
}

.gallery {
  margin: 2em;
  display: block;
  flex-wrap: wrap;
  justify-content: center;
  border: 0.3em solid #FFF;
  width: 90%;
}

.jumbotron {
  border: 0.3em solid yellow;
  text-align: center;
  display: block;
  font-weight: bold;
  background-image: url("https://s3.eu-central-1.amazonaws.com/languagelighthouse/Photos/wildflowersSmall.jpg");
  background-position: center top;
  background-size: cover;
  background-repeat: repeat-y;
}

.directories {
  border: 0.3em solid blue;
  margin: 1em;
  padding: 1em;
  display: inline-block;
  background-image: url("https://s3.eu-central-1.amazonaws.com/languagelighthouse/Photos/firewoodSmall.jpg");
  background-position: center top;
  background-size: cover;
  background-repeat: repeat-y;
}

.page-title {
  text-align: left;
  margin: 0.5em;
  display: block;
  font-weight: bold;
  color: black;
}

.page-subtitle {
  text-align: right;
  margin: 0.5em;
  display: block;
  color: black;
  font-weight: bold;
}

.page-head {
  text-align: center;
  max-height: 4em;
  margin: 0.5em;
  color: black;
  font-weight: bold;
}

.page-desc {
  text-align: left;
  color: black;
  font-weight: bold;
  margin: auto;
}

.page-flag {
  font-size: 2em;
  text-align: center;
  margin: 0.5em;
  color: black;
  font-weight: bold;
}

.flag {
  display: inline;
  max-width: 4em;
  margin: 0.5em;
}

.flagMed {
  display: inline;
  max-width: 6em;
  margin: 0.5em;
}

.flagBig {
  display: inline;
  max-height: 8em;
  max-width: 15em;
  margin: 0.5em;
}

.lessonHeader {
  font-weight: bold;
  font-size: 150%;
  display: block;
  text-align: center;
  margin: auto;
  color: white;
}

.lesson {
  font-weight: bold;
  display: block;
  text-align: center;
  margin: auto;
  color: white;
}

ol {
  text-align: left;
  font-size: 150%;
}

ul {
  text-align: center;
  font-size: 150%;
}

img.thumbnail {
  display: inline;
  border: 0.3em solid blue;
  max-height: 6em;
  margin: 0.5em;
}

img.thumbnailInline {
  display: inline;
  border: 0.3em solid black;
  max-height: 10em;
  margin: 0.5em;
}

img.thumbnailLittle {
  display: block;
  border: 0.3em solid black;
  max-height: 8em;
  margin: 0.5em;
}

img.thumbnailBig {
  display: block;
  border: 0.3em solid black;
  max-height: 10em;
  margin: 1em;
}

img.thumbnailSuper {
  display: block;
  border: 0.3em solid black;
  max-height: 12em;
  margin: 1em;
}

img.thumbnailSuperRight {
  border: 0.3em solid black;
  max-height: 8em;
  margin: 0.5em;
  justify-content: right;
}

table {
  border: 0.15em solid blue;
  font-weight: bold;
}

tr {
  border-bottom: 0.15em solid blue;
}

td {
  text-align: left;
  padding: 0.2em;
  border-right: 0.15em solid blue;
}

nav a:hover {
  text-decoration: underline;
  color: white;
}

.controlButton {
    position: fixed;
    float: left;
    padding-left:0.2em;
    bottom: 0;
    left: 0.5em;
    right: 0.5em;
    height: 2.0em;
    display: inline-block;
}

.thin {
  border: none;
  border-bottom: none;
  border-right: none;
}

.two {
  display: table;
  width: 90%;
  margin: 2em;
}
.two img {
  display: table-cell;
  vertical-align: middle;
  max-width: 4em;
  
}
.two h2 {
  display: table-cell;
  vertical-align: middle;
}

.three img {
  display: table-cell;
  vertical-align: middle;
  max-height: 12em;
  max-width: 20em;
  margin: 0.5em;
}

h1 {
  text-shadow: 0px 4px 3px gray;
}

div#left {
  display: inline;
  text-align: left;
}

div#right {
  display: inline;
  text-align: right;
}

.lessonNotYet {
  font-weight: bold;
  display: block;
  text-align: center;
  margin: auto;
  color:  red;
}

.line {
  display: block;
  margin: 1em;
  font-weight: bold;
  color: black;
  font-size: 125%;
}

.videox {
  display: block;
  border: 0.3em solid red;
  margin: 2em;
  max-height: 15em;
  max-width: 25em;
}