styles.css

/* fonts */
@import url(https://fonts.google.com/specimen/Barlow+Semi+Condensed);

/* custom variables */
:root {
  /* colors */
  --clr-primary-violet: hsl(263, 55%, 52%);
  --clr-primary-grayish-blue: hsl(217, 19%, 35%);
  --clr-primary-blackish-blue: hsl(219, 29%, 14%);
  --clr-primary-white: hsl(0, 0%, 100%);
  --clr-neutral-gray: hsl(0, 0%, 81%);
  --clr-neutral-grayish-blue: hsl(210, 46%, 95%);

  /* font-family */
  --ff-primary: 'Barlow Semi Condensed', sans-serif;

  /* font-size */
  --fs-primary: 1.3rem;

  /* font-weight */
  --fw-primary: 500;
  --fw-accent: 600;
}

/* reset */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
}

/* general styles */
body {
  min-height: 100vh;
  font-family: var(--ff-primary);
  font-size: var(--fs-primary);
  font-weight: var(--fw-primary);
  color: var(--clr-neutral-gray);
  background-color: var(--clr-neutral-grayish-blue);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

/* styles */
.grid-container {
  width: 90%;
  max-width: 144rem;
  margin: 3.2rem auto 0 auto;
  display: grid;
  gap: 2.5rem;
}

.card {
  padding: 2rem 3.2rem;
  border-radius: 1rem;
  box-shadow: 1rem 1.5rem 3rem -1rem gray;
  transition: box-shadow 0.3s ease-in-out;
}

.card:hover {
  box-shadow: none;
}

.card__header {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.card__header .photo {
  border-radius: 50%;
  border: 0.2rem solid var(--clr-primary-white);
}

.card__header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--clr-primary-white);
  margin-bottom: 0.2rem;
}

.card__header h2 {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--clr-primary-white);
  opacity: 0.5;
}

.card__intro{
  margin-top: 1rem;
  font-size: 2.4rem;
  color: var(--clr-primary-white);
}

.card__review{
  margin-top: 1.5rem;
  font-size: 1.6rem;
  color: var(--clr-primary-white);
  opacity: 60%;
}

.daniel {
  background-color: var(--clr-primary-violet);
  position: relative;
  z-index: 0;
}

.daniel .quotation {
  position: absolute;
  top: 0;
  right: 6rem;
  z-index: -1;
}

.jonathan {
  background-color: var(--clr-primary-grayish-blue);
}

.kira,
.jeanette{
  background-color: var(--clr-primary-white);
}

.kira .card__header h1,
.kira .card__header h2,
.jeanette .card__header h1,
.jeanette .card__header h2 {
  color: var(--clr-primary-grayish-blue);
}

.kira .card__intro,
.kira .card__review,
.jeanette .card__intro,
.jeanette .card__review{
  color: var(--clr-primary-grayish-blue);
} 

.patrick {
  background-color: var(--clr-primary-blackish-blue);
}

@media (min-width: 70em) {
  .grid-container {
    grid-template-columns: repeat(4, 1fr);
  }

  .daniel, 
  .patrick {
    grid-column: span 2;
  }

  .kira {
    grid-row: span 2;
  }
}