* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Quicksand", sans-serif;

}

header, .intro, main, .review, footer {
  max-width: 1300px;
  margin: auto;
}

header {
  border-bottom: 3px solid black;
}

header nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

header nav .nav-title {
  font-weight: bold;
  font-size: 1.5em;
}

header nav ul {
  display: flex;
}

header nav ul li {
  margin-right: 25px;
  list-style: none;
}

.intro {
  border-bottom: 3px solid black;
  height: 350px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  line-height: 3em;
}

main > * {
  width: 100%;
  border: 3px solid black;
  padding: 20px;
}
    

.main {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(6, 1fr);
    gap: 8px;
    margin-top: 20px;
    border-bottom: 3px solid black;
    padding-bottom: 20px;
}
    
.project {
  grid-column: span 2 / span 2;
  grid-row: span 6 / span 6;
}

.project ul {
  line-height: 2em;
  margin-top: 20px;
  list-style: decimal;
  text-align: start;
  margin-left: 20px;
}

.work-experience {
  grid-column: span 2 / span 2;
  grid-row: span 3 / span 3;
  grid-column-start: 3;
  display: flex;
  flex-direction: column;
  text-align: start;
  justify-content: center;
  line-height: 2em;
  font-size: 1em;
}

.opensource {
  grid-column: span 2 / span 2;
  grid-row: span 3 / span 3;
  grid-column-start: 3;
  grid-row-start: 4;
  flex-direction: column;
  text-align: start;
  justify-content: center;
  line-height: 2em;
  font-size: 1em;
}

.education {
  grid-column: span 2 / span 2;
  grid-row: span 6 / span 6;
  grid-column-start: 5;
  grid-row-start: 1;
}

.education .edu-item {
  margin-top: 10px;
  font-size: .8em;

  line-height: 2em;
}

.education .courses {
  font-size: .7em;
  margin-top: 20px;
  line-height: 2em;
}

.review {
  padding: 20px 0;
}

.comment-container {
  display: flex;
  column-gap: 20px;
}

.comment-item {
  width: 450px;
  border: 2px solid black;
  padding: 10px;
  border-radius: 10px;
  margin-top: 30px;
  font-size: 15px;
}

.comment-item {
  font-size: 1.2em;
  line-height: 1.8em;
}

.comment-from {
  margin-top: 10px;
  font-weight: bold;
}

.role {
  font-weight: bold;
}

footer {
  border-top: 3px solid black;
  text-align: center;
  margin-top: 20px;
  padding: 20px 0;
}