style.css

/* Font-sizes(px): 
10/12/14/16/18/20/24/30/36/44/52/62/74/86/98 

- SPACING SYSTEM (px)
2/4/8/12/16/24/32/48/64/80/96/128 */

* {
  padding: 0rem;
  margin: 0rem;
  box-sizing: border-box;
}

html {
  font-size: 62.5%;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  height: 100vh;
  font-family: "Poppins", sans-serif;
  color: hsl(234, 12%, 34%);
  width: 100%;
}
.first-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  /* padding: 0rem 10rem; */
  /* width: 75rem; */
}
.main-container {
  display: grid;
  grid-template-columns: 25rem 25rem 25rem;
  grid-template-rows: auto auto auto auto;
  gap: 2rem;
}

.heading {
  font-size: 3rem;
  font-weight: 280;
  color: hsl(234, 12%, 34%);
  margin-bottom: 1rem;
}

.sub-heading {
  font-size: 3rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.content {
  font-size: 1.4rem;
  color: hsl(229, 6%, 66%);
  margin-bottom: 5rem;
  width: 51rem;
}

.one {
  border-top: 3px solid hsl(180, 62%, 55%);
  grid-column: 1 / 2;
  grid-row: 1/-1;
  align-self: center;
}

.two {
  border-top: 3px solid hsl(0, 78%, 62%);
}

.three {
  border-top: 3px solid hsl(34, 97%, 64%);
  grid-column: 2 / 3;
}

.four {
  border-top: 3px solid hsl(212, 86%, 64%);
  grid-column: 3/4;
  grid-row: 1/-1;
  align-self: center;
}

.container-design p:first-of-type {
  font-size: 1.6rem;
  font-weight: 550;
  margin-bottom: 0.8rem;
}

.container-design p:nth-of-type(2) {
  font-size: 1.2rem;
  color: hsl(229, 6%, 66%);
  line-height: 2rem;
  margin-bottom: 2rem;
}
.container-design {
  padding: 2rem;
  border-radius: 0.5rem;
  box-shadow: 3px 3px 18px rgba(73, 93, 181, 0.2);
}
.image {
  height: 5rem;
  width: 5rem;
  text-align: right;
  display: inline-block;
  position: relative;
  top: 0rem;
  left: 15rem;
}