html, body {
  height:100%;
  margin: 20 20 20 20;
}

a, a:link, a:visited, a:focus, a:hover, a:active{
  color:inherit;
  text-decoration:none;
}

.lower-left {
  position: fixed;
  bottom: 20px;
  color: black;
  font-family: "Courier New";
  font-size: 1em;
}
.lower-left .a {
  color: inherit;
  text-decoration: none;
}
.lower-left:hover {
  text-decoration: underline;
}

body {
  background: #e8e8e8;
}

#typewriter {
  font-size: 2em;
  margin: 0;
  font-family: "Courier New";
}
#typewriter:after {
  content: "|";
  -webkit-animation: blink 500ms linear infinite alternate;
          animation: blink 500ms linear infinite alternate;
}

@-webkit-keyframes blink {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes blink {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: hidden;
  opacity: 0;
}
.overlay:target {
  visibility: visible;
  opacity: 1;
}

.popup {
  margin: 70px auto;
  padding: 20px;
  background: #fff;
  width: min-content;
  position: relative;
  transition: all 5s ease-in-out;
}

.popup h2 {
  margin-top: 0;
  color: #333;
  font-family: "Courier New";
}
.popup .close {
  position: absolute;
  top: 20px;
  right: 30px;
  transition: all 200ms;
  font-size: 30px;
  font-weight: bold;
  text-decoration: none;
  color: #333;
}
.popup .close:hover {
  color: #06D85F;
}
.popup .content {
  max-height: 30%;
  overflow: auto;
  font-family: "Courier New";
}