style.css

:root {
  --background-color: #f9fafb;
  --dark-red-default: #8b321a;
  --dark-red-hover: #6c0c04;
  --red-error-color: #c54343;
  --form-background: white;
  --input-default-border: 1px solid #e5e7eb;
  --input-focus-border: 1px solid #5076e1;
  --input-invalid-border: 1px solid var(--red-error-color);
  --box-shadow: 5px 5px 8px -5px rgba(0, 0, 0, 0.27);
}

@font-face {
  font-family: 'Norse-Bold';
  src: url('fonts/Norse-Bold.otf') format('opentype');
}

html {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
    Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  margin: 0;
  font-size: 1rem;
}

body {
  display: flex;
  height: 100vh;
  margin: 0;
  padding: 0;
}

/* Left Section */

.left-section {
  display: flex;
  flex-direction: column;
  position: relative;
  color: white;
}

.background-image {
  height: 100vh;
  width: 40vw;
  filter: brightness(80%);
  object-fit: cover;
}

/* Logo Card */

.odin-logo-card {
  background: rgba(0, 0, 0, 0.35);
  position: absolute;
  top: 21vh;
  width: 100%;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px 0;
  font-family: 'Norse-Bold', sans-serif;
}

.odin-logo-card h1 {
  font-size: 5rem;
  margin: 0;
}

.odin-logo-card h1 a {
  text-decoration: none;
  color: white;
}

.odin-logo-card img {
  height: 95%;
}

/* Credit */

.image-credit {
  position: absolute;
  bottom: 0;
  align-self: center;
  font-size: 0.92rem;
}

.image-credit a {
  color: white;
}

/* Main/Right Section */

main {
  background-color: var(--background-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* Paragraphs */

main p {
  padding: 0 52px;
}

main p:nth-child(-n + 2) {
  font-size: 1.5rem;
  font-weight: bold;
}

main p:first-child {
  margin: 0 10vw 0 0;
}

main p:last-child a {
  text-decoration: none;
  color: var(--dark-red-default);
  font-weight: 700;
}

main p:last-child a:hover {
  cursor: pointer;
  color: var(--dark-red-hover);
}

/* Form */

.input-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-column-gap: 68px;
  grid-row-gap: 20px;
}

fieldset {
  display: flex;
  align-items: center;
  height: 238px;
  background: var(--form-background);
  border: unset;
  margin: 32px 0;
  box-shadow: 0 4px 12px -4px rgba(0, 0, 0, 0.27);
  padding: 60px 0 50px 50px;
}

fieldset legend {
  font-size: 1.5rem;
  font-weight: 700;
  position: relative;
  top: 36px;
}

fieldset div {
  display: flex;
  flex-direction: column;
  width: 21vw;
  gap: 4px;
}

fieldset div input {
  height: 30px;
  border-radius: 3px;
  border: var(--input-default-border);
}

fieldset div input:focus {
  outline: var(--input-focus-border);
  box-shadow: var(--box-shadow);
}

fieldset div input:focus:invalid {
  outline: var(--input-invalid-border);
}

.error {
  outline: var(--input-invalid-border);
}

.error + span::after {
  color: var(--red-error-color);
  font-size: 0.8rem;
  position: absolute;
}

#password.error + span::after {
  content: '* Passwords do not match';
}

fieldset div label {
  font-size: 0.8rem;
}

form button {
  background: var(--dark-red-default);
  border: unset;
  border-radius: 8px;
  width: 230px;
  height: 50px;
  color: white;
  font-weight: 600;
  margin: 4px 0 10px 52px;
  box-shadow: var(--box-shadow);
}

form button:hover {
  background: var(--dark-red-hover);
  cursor: pointer;
}

form button:active {
  scale: 0.98;
}

form button,
main p:last-child {
  font-size: 1.1rem;
}

@media screen and (max-width: 768px) {
  body {
    flex-direction: column;
  }

  .left-section {
    height: 50vh;
  }

  .background-image {
    height: 31vh;
    width: 100vw;
  }

  .odin-logo-card {
    top: 8vh;
  }

  main {
    padding: 60px 23px;
  }

  main p:nth-child(-1n + 2) {
    font-size: 1.2rem;
  }

  .input-container {
    grid-template-columns: 1fr;
    grid-row-gap: 20px;
  }

  fieldset {
    height: 420px;
    margin: 32px 0;
    padding: 81px 0 50px 50px;
  }

  fieldset div {
    width: 62vw;
  }
}