style.css

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,200..900;1,8..60,200..900&family=Ubuntu:ital,wght@0,400;0,500;0,700;1,400;1,500;1,700&display=swap');
body {
  margin: 0px;
  box-sizing: border-box;
  color: #202020;
  font-family: 'ubuntu';
  background-color: #f6f6f6;
}

#logo {
  height: 4rem;
}

h1, h2 {
  font-family: 'source serif 4';
}

h1 {
  text-align: center;
  font-size: 2.2rem;
}

h2 {
  margin: 0;
  display: inline;
  font-weight: 600;
  font-size: 1.8rem;
}

p {
  line-height: 1.6rem;
}

header {
  margin-top: 1rem;
  padding: 0 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#logo-container {
  display: flex;
  align-items: center;
}

#wordmark {
  font-size: 2.5rem;
  font-family: 'source serif 4';
  font-weight: 600;
  padding: .25rem;
}
.wordmark-highlight {
  margin-left: -0.75rem;
  background-color: #9E9CEE66;
}

#marker-left {
  transform: translateX(-0.375rem) translateY(2rem);
}
#marker-right {
  transform: translateX(-0.375rem) translateY(2rem);
}

header a {
  min-height: min-content;
}

main {
  position: relative;
  overflow: hidden;
}

.content-wrap {
  padding: 1rem;
}

#arrow {
  width: 0.75rem;
  height: 0.75rem;
  background-color: #f6f6f6;
  border: 2px #5D5D5D;
  border-style: solid none none solid;
  border-radius: 0.25rem 0 0 0;
  /* This translate is a little wonky because of the below negative margin. */
  transform: translate(112px, -4.45px) rotate(45deg);
}
#definition-container {
  border: 2px #5D5D5D solid;
  border-radius: 0.25rem;
  padding: 1rem;
  margin-top: -0.75rem;
  margin-bottom: 1rem;
  max-width: 20rem;
}

#phonemic {
  color: #5d5d5d;
}

.download-link {
  margin: .25rem;
  text-align: center;
  background-color: #202020;
  color: #f6f6f6;
  padding: .75rem;
  display: block;
  width: 8rem;
  text-decoration: none;
  border-radius: .25rem;
}
#cta-link {
  margin: auto;
  margin-top: 4rem;
}

#planet-container {
  /** planets are out of dom, so this adds some space */
  height: 13rem;
}

#planet1 {
  position: absolute;
  right: -1.5rem;
  transform: translateY(8rem);
  z-index: 2;
}

#planet2 {
  position: absolute;
  left: 5%;
  z-index: 1;
}

/** How it works */ 

.expanse {
  padding-top: 4rem;
  padding-bottom: 4rem;
  background-color: #202020;
  color: white;
}

.split-container {
  padding-top: 1rem;
  padding-bottom: 7rem;
  display: grid; 
  grid-template-rows: max-content 1fr;
}
.split-left {
  margin-bottom: 2rem;
}
#stay-immersed {
  padding-top: 1rem;
}
.split-right {
  display: flex;
  justify-content: center;
}
.split-right img {
  width: 100%;
  object-fit: contain;
  border: linear-gradient(212deg, rgba(63,63,63,1) 0%, rgba(42,42,42,1) 100%) solid;
  border-width: 1.5rem 1.5rem  3.25rem;
}
#ereader-border {
  padding: 1.5rem 1.5rem 3.25rem 1.5rem;
  position: relative;
  background: linear-gradient(212deg, #F4F4EF 0%, #DFDFD4 100%);
  max-width: 20rem;
  border-radius: 1rem;
}

#how-it-works-list {
  padding-left: 0;
  padding-top: 2rem;
  list-style: none;
}
#how-it-works-list li {
  margin-bottom: 3rem;
  display: flex;
  align-items: start;
  line-height: 1.6rem;
}
#how-it-works-list li img {
  margin-right: 1.25rem;
}

footer {
  background-color: #202020;
  height: 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
footer p {
  color: #d9d9d9;
  font-size: 0.875rem;
  font-style: italic;
  margin: 0;
}

/* download */
#download-container {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

@media (min-width: 48rem){
  header {
    margin-top: 1.5rem;
    padding: 0 1.5rem;
  }

  .content-wrap {
    padding: 1.5rem;
    max-width: 64rem;
    margin: auto;
  }

  h1 {
    font-size: 3.5rem;
  }

  #definition-container {
    margin-bottom: 2.5rem;
  }

  .expanse {
    font-size: 1.1rem;
  }

  #motivation-container h2 {
    font-size: 2rem;
  }

  .split-container {
    padding-top: 3rem;
    padding-bottom: 7rem;
    grid-template-columns: 0.75fr 1fr;
    grid-template-rows: 1fr;
    grid-gap: 2rem;
  }
  .split-left {
    margin-bottom: 4rem;
  }

  #how-it-works-container h2 {
    font-size: 2rem;
  }

  #how-it-works-list li {
    display: flex;
    align-items: start;
    margin-bottom: 4rem;
  }

  #download-container {
    justify-content: start;
  }
}