.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;
  }

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