body {
  max-width: 1350px;
  margin: auto;
}

html {
  background-color: #2d2e2e;
}

#intro {
  width: 40%;
  display: block;
  position: relative;
  margin: 10rem auto;
  text-align: center;
  font-family: 'Oswald', sans-serif;
  color: #d8dcdc;
}

h1 {
  color: #e8eded;
  font-size: 35px;
  font-family: "Oswald", sans-serif;
  font-weight: 200;
  border-bottom: 2px solid;
  padding-bottom: 1rem;
}

#start-options {
  display: flex;
  flex-direction: column;
  align-items: center;
}

#start-options > *:not(:last-child) {
  margin-bottom: 16px;
}

.hidden {
  display: none;
}

.focus-button {
  font-size: 25px;
  border: 7px double #949494;
  padding: 6px 45px 10px;
  background-color: #2d2e2e;
  font-family: "Oswald", sans-serif;
  color: #e4f2f7;
  transition: padding 0.5s ease, border-radius 0.5s ease;
  margin: 16px 0;
  display: block;
}

.focus-button:hover {
  cursor: pointer;
  padding: 6px 10px 10px;
  border-radius: 10px;
}

.caption {
  margin: 8px 0;
}

.caption p {
  margin: 0
}

.lines {
  margin-top: 10rem;
}

.line {
  display: block;
  width: 75%;
  margin: 5px auto;
  height: 2px;
  background-color: #e4f2f7;
}

@media only screen and (max-width: 1000px) {
  #intro {
    width: 55%;
  }
  h1 {
    font-size: 30px;
  }
  .line {
    width: 85%;
  }
  .focus-button {
    font-size: 23px;
  }
}

@media only screen and (max-width: 650px) {
  #intro {
    width: 70%;
  }
}

@media only screen and (max-width: 600px) {
  #intro {
    width: 75%;
    margin: 10rem auto 5rem;
  }
  h1 {
    font-size: 28px;
  }
  .focus-button {
    padding: 4px 36px 9px;
    margin-top: initial;
  }
  .lines {
    margin-top: 6rem;
  }
}

@media only screen and (max-width: 500px) {
  h1 {
    font-size: 23px;
  }
  #intro {
    width: 80%;
    margin: 7rem auto 3rem;
  }
}