codepens/grid-based-blog-index-page-layout/dist/style.css

:root {
  --pink: #db8398;
  --black: #3c3c3c;
}

body {
  padding: 1rem;
  font-family: 'Nunito', sans-serif;
  color: var(--black);
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}
@media (min-width: 700px) {
  body {
    padding: 3rem;
  }
}

p {
  line-height: 1.6;
}

h1,
h2 {
  font-family: 'Libre Baskerville', serif;
  font-weight: normal;
  margin-top: 0;
}

.article-title {
  font-size: 1.5rem;
  color: var(--pink);
}
@media (min-width: 800px) {
  .article-title {
    font-size: 2rem;
  }
}

.nav,
article,
.intro {
  padding: 1rem;
}

.header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 100%;
  font-size: 1.2rem;
}
.header a {
  color: currentColor;
  text-decoration: none;
  margin-right: 24px;
  transition: all 0.3s ease-in;
}
.header a:hover, .header a:active {
  text-decoration: underline;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  display: grid;
  gap: 2rem;
  grid-template: "nav"     40px "intro"   auto "article" auto / 1fr;
}
@media (min-width: 700px) {
  .container {
    grid-template: "intro nav     .   "     40px "intro article article" 1fr "intro article article" 1fr / 80px 1fr;
  }
}
@media (min-width: 1000px) {
  .container {
    grid-template: "intro nav     .   "     40px "intro article article" 1fr "intro article article" 1fr / 150px 1fr;
  }
}

.nav {
  grid-area: nav;
}

.intro {
  grid-area: intro;
}
.intro h1 {
  margin-bottom: 0;
  color: var(--pink);
}
@media (min-width: 700px) {
  .intro {
    writing-mode: vertical-rl;
    align-self: center;
    justify-self: center;
  }
}
.intro h1 {
  font-family: 'Nunito', sans-serif;
  text-transform: uppercase;
  letter-spacing: 0.3rem;
}

.main {
  grid-area: article;
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
  grid-template-rows: repeat(auto-fill, minmax(300px, min-content));
}
@media (min-width: 700px) {
  .main {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 180px);
  }
}
@media (min-width: 700px) {
  .main {
    grid-template-rows: repeat(2, minmax(300px, 1fr));
  }
}

.flower-svg {
  display: none;
}

.flower-right {
  position: absolute;
  width: 700px;
  height: auto;
  z-index: -1;
  left: -280px;
  top: -5%;
  transform: rotate(-5deg) scaleX(-1);
  transform-origin: top;
}
@media (min-width: 400px) {
  .flower-right {
    left: unset;
    right: -6%;
    transform: rotate(-7deg) scaleX(-1);
  }
}
@media (min-width: 700px) {
  .flower-right {
    top: -10%;
    transform: rotate(-28deg);
    left: unset;
    right: -55vw;
    transform-origin: right;
  }
}
@media (min-width: 1000px) {
  .flower-right {
    transform: rotate(-35deg);
    top: -28%;
    right: -35vw;
    transform-origin: right;
  }
}

.flower-left {
  display: none;
}
@media (min-width: 700px) {
  .flower-left {
    display: block;
    position: absolute;
    left: -670px;
    width: 700px;
    height: auto;
    top: -45%;
    transform: scaleX(-1) rotate(-50deg);
    transform-origin: bottom;
    z-index: -1;
  }
}
@media (min-width: 1000px) {
  .flower-left {
    top: -40%;
    left: -600px;
    transform: scaleX(-1) rotate(-35deg);
  }
}
@media (min-width: 1200px) {
  .flower-left {
    right: -30vw;
  }
}

.flower-bottom {
  display: none;
}
@media (min-width: 700px) {
  .flower-bottom {
    display: block;
    position: absolute;
    height: 700px;
    right: -730px;
    top: 50%;
    transform: rotate(75deg) scaleY(-1);
    transform-origin: bottom;
    z-index: -1;
  }
}
@media (min-width: 1000px) {
  .flower-bottom {
    height: 700px;
    right: -56vw;
    top: 45%;
    transform: rotate(75deg) scaleY(-1);
  }
}
@media (min-width: 1200px) {
  .flower-bottom {
    right: -40vw;
  }
}