@import url("https://fonts.googleapis.com/css?family=Slabo&display=swap");

html {
  font-size: calc((1em + 1vw) / 2.2);
  font-family: sans-serif;
  color: #333;
}
.content {
  position: relative;
  max-width: 90vw;
  margin: 0 auto;
}
header {
  display: block;
  height: 6rem;
  border-bottom: 5px solid #ddd;
}
h1 {
  position: absolute;
  bottom: -7rem;
  line-height: 5rem;
  font-size: 4rem;
  font-weight: 600;
}
h1 a {
  text-decoration-line: none;
}
.main {
  padding-top: 20vh;
  font-family: "Slabo";
  font-size: 8rem;
}
#result {
  position: relative;
  min-height: 20rem;
  background-color: #eee;
  padding: 1rem 2rem;
  border-radius: 5px;
}
#result p {
  margin-bottom: 5rem;
  hyphens: auto;
}
button {
  width: 10rem;
  margin: 2rem 0 0.5rem 0;
  padding: 1rem 3rem;
  background-color: #3a3;
  border: none;
  border-radius: 5px;
  outline: none;
  font-size: 1.5rem;
  color: #fff;
}
button:hover {
  background-color: #292;
  cursor: pointer;
}
.hint {
  display: block;
  width: 10rem;
  height: 1rem;
  text-align: center;
  font-size: 1rem;
  color: #aaa;
}
@media (min-width: 320px) {
  /* smartphones, portrait iPhone, portrait 480x320 phones (Android) */
  header {
    height: 14rem;
  }
  h1 {
    bottom: -15rem;
  }
  .main {
    padding-top: 4vh;
  }
}
@media (min-width: 600px) {
  /* portrait tablets, portrait iPad, e-readers (Nook/Kindle), landscape 800x480 phones (Android) */
  header {
    height: 9rem;
  }
  h1 {
    bottom: -10rem;
  }
  .main {
    padding-top: 4vh;
  }
  #result {
    min-height: 0;
  }
  #result p {
    margin-bottom: 0;
  }
}
@media (min-width: 801px) {
  /* tablet, landscape iPad, lo-res laptops ands desktops */
  header {
    height: 6rem;
  }
  h1 {
    bottom: -7rem;
  }
  .main {
    padding-top: 20vh;
  }
  #result {
    min-height: 20rem;
  }
  #result p {
    margin-bottom: 5rem;
  }
}