body {
  font-family: sans-serif;
  color: black;
  height: 100%
  width: 100%;
}

a:hover {
  background-color: yellow;
}

.heading {
  font-family: serif;
  font-size: 1.6em;
  color: black;
  padding-left: 18px;
  padding-top: 6px;
  padding-bottom: 6px;
}

div.container-fluid {
  max-width: 100%;
}

.col {
  width: 50%;
}

iframe {
  border: 2px solid blue;
  width: 100%;
  height: 540px;
  margin: 0;

}

.bottom {
  width: 100%;
  border: none;
}

.cards {
    box-shadow: 5px 10px 8px #888888;
}

img {
  position: absolute;
  left: 0px;
  top: 0px;
  z-index: -1;
  max-width: 100%
}

.snippets {
  margin-top: 420px;
}