.wrapper {
  min-height: calc(
    100vh - 60px
  ); /* will cover the 100% of viewport - height of footer (padding-bottom) */
  overflow: hidden;
  display: block;
  position: relative;
  padding-bottom: 60px; /* height of your footer + 30px*/
}

.tutorial img {
  display: flex;
  align-items: center;
  max-height: 40vh;
  max-width: 100%;
  margin: auto;
}

.news img {
  display: flex;
  align-items: center;
  max-height: 40vh;
  max-width: 100%;
  margin: auto;
}

.tutorial blockquote {
  background: #f9f9f9;
  border-left: 10px solid#4EAF47;
  margin: 1.5em 10px;
  padding: 0.5em 10px;
  quotes: "\201C""\201D""\2018""\2019";
}
blockquote:before {
  color: #4eaf47;
  content: open-quote;
  font-size: 4em;
  line-height: 0.1em;
  margin-right: 0.25em;
  vertical-align: -0.4em;
}
blockquote p {
  display: inline;
}

.tutorial table,
th,
td {
  border: 1px solid #ddd;
}

.tutorial th {
  padding-top: 12px;
  padding-bottom: 12px;
  text-align: left;
  background-color: #4eaf47;
  color: white;
}

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

:root {
  --url: url('./data/mcu_opacity.png');
}

.blocklySvg {
  background-image: var(--url);
  background-position: center;
  background-repeat: no-repeat;
}