* {
  margin: 0;
  padding: 0;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  -webkit-text-stroke: 0.5px;
  font-size: 16px;
}

.head {
  margin: 20px;
  z-index: 1;
  position: fixed;
}

iframe {
  height: 100vh;
  border: none;
  width: 100%;
}

a:link {
  color: black;
  text-decoration: none;
  border-bottom: 2px solid black;
}

/* visited link */
a:visited {
  color: black;
  text-decoration: none;
  border-bottom: 2px solid black;
}

/* mouse over link */
a:hover {
  color: blue;
  text-decoration: none;
  border-bottom: 2px solid blue;
}

/* selected link */
a:active {
  color: blue;
  text-decoration: none;
  border-bottom: 2px solid blue;
}

a.selected {
  color: blue;
  text-decoration: none;
  border-bottom: 2px solid blue;
}

.purple-text {
  color: blueviolet;
}

a:link.purple,
a:active.purple,
a.selected.purple,
a:visited.purple {
  color: blueviolet;
  text-decoration: none;
  border-bottom: 2px solid blueviolet;
}

a:link.red,
a:active.red,
a.selected.red,
a:visited.red {
  color: red;
  text-decoration: none;
  border-bottom: 2px solid red;
}

a:link.no-link,
a:active.no-link,
a.selected.no-link,
a:visited.no-link {
  color: black;
  text-decoration: none;
  border-bottom: none;
}

a:hover.purple {
  border-bottom: 2px dashed blueviolet;
}

a:hover.red {
  border-bottom: 2px dashed red;
}

a:hover.no-link {
  color: black;
  text-decoration: none;
  border-bottom: none;
}

ul {
  list-style-type: circle;
}

.box {
  margin: 20px;
  position: absolute;
  top: 120px;
}

.container {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

img {
  width: 80%;
  padding-bottom: 20px;
  display: flex;
  align-items: center;
  flex-direction: column;
}

@media only screen and (max-width: 600px) {
  .container {
    padding-top: 140px;
  }
}