body {
  font-family: Arial, Helvetica, sans-serif;
  text-align: center;
  background-color: #212121;
  color: #eaeaea;
}

a:link {
  color: #eaeaea; 
  background-color: transparent; 
  text-decoration: none;
}

a:visited {
  color: #eaeaea;
  background-color: transparent;
  text-decoration: none;
}

a:hover {
  color: #eaeaea;
  background-color: transparent;
  text-decoration: underline;
}

a:active {
  color: #eaeaea;
  background-color: transparent;
  text-decoration: underline;
}

h1 {
  font-size: 2.2em;
  margin-top: 0;
  margin-bottom: 0.4em;
}

p {
  font-size: 1.1em;
}

hr {
  margin-top: 3em;
  border: 1px solid #a9a9a9;
  width: 50vw;
}

.responsive {
  width: 25%;
  max-width: 600px;
  max-width: 600px;
  height: auto;
}

.image {
  margin: 3em;
}

.box {
  border: 2px solid green;
  border-radius: 20px;
  display: inline-block;
  padding: 1em 1em 0.9em 1em;
  margin: 3em;
  box-shadow: 0px 0px 10px black;
}

.button {
  font-size: 2em;
  margin: 0em .6em 0em .6em;
  padding: 0;
}

.title {
  margin: 0;
  font-family: Courier New;
}

.small {
  margin: 0;
  font-size: .8em;
}

.secondary {
  color: #a9a9a9;
}

@media screen and (prefers-color-scheme: light) {
  body {
    background-color: #fffffa;
    color: black;
  }

  a:link {
    color: black; 
    background-color: transparent; 
    text-decoration: none;
  }

  a:visited {
    color: black;
    background-color: transparent;
    text-decoration: none;
  }

  a:hover {
    color: black;
    background-color: transparent;
    text-decoration: underline;
  }

  a:active {
    color: black;
    background-color: transparent;
    text-decoration: underline;
  }

  .secondary {
    color: #797979;
  }

  .box {
    border: 2px solid #fff1bf;
    box-shadow: 0px 0px 6px #fff1bf;
  }
}