odin-codespace/keynotes.app/public/css/style.css

:root {
  --font-size: 18px;
  --desktop-heading-font-size: 5em;
  --desktop-line-height: 1;
  --mobile-heading-font-size: 4em;
  --mobile-line-height: 0.8;
}
/* 1. Use a more-intuitive box-sizing model */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* 2. Remove default margin */
* {
  margin: 0;
}

body {
  /* 3. Add accessible line-height */
  line-height: 1.5;
  /* 4. Improve text rendering */
  -webkit-font-smoothing: antialiased;
  font-family: "Lato, serif";
}

/* 5. Improve media defaults */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

/* 6. Inherit fonts for form controls */
input,
button,
textarea,
select {
  font: inherit;
}

/* 7. Avoid text overflows */
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

/* 8. Improve line wrapping */
p {
  text-wrap: pretty;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  text-wrap: balance;
}

/*
  9. Create a root stacking context
*/
#root,
#__next {
  isolation: isolate;
}

.flex {
  display: flex;
}

.container.flex.hero {
  align-items: center;
  justify-content: center;
  min-height: 60vh;
}

.container.hero {
  text-align: center;
}

.container.hero * {
  margin: 0.5em 0;
}

.container.hero p {
  font-size: 1.2rem;
  padding: 1em;
}

.hero__heading {
  margin: 0;
  font-size: var(--mobile-heading-font-size);
  font-family: "Rokkitt", serif;
  line-height: var(--desktop-line-height);
}

.btn {
  display: inline-block;
  width: 100%;
  padding: 1em;
  text-decoration: none;
  border-radius: 0.7em;
}

.btn__link {
  text-align: center;
  background: #f0f0f0;
  line-height: 1.5em;
  max-width: 200px;
}

.btn__link:hover {
  background: #bfbba9;
}

.hero > .btn__link {
  margin-top: 2em;
}

#main {
  padding: 0 50px;
}

#main > .container.flex {
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

@media only screen and (min-width: 750px) {
  .hero__heading {
    margin: 0;
    font-size: var(--desktop-heading-font-size);
    font-family: "Rokkitt", serif;
    line-height: var(--desktop-line-height);
  }
  .container.hero p {
    font-size: 1.5rem;
    padding: 0.5em;
  }
  .container.flex * {
    flex: 1;
  }
  #main {
    padding: 0 100px;
  }

  #main > .container.flex {
    gap: 10em;
  }

  .form-item > .btn {
    max-width: 200px;
  }
}