style.css

body {
  display: flex;
  justify-content: center;
  padding: 1em;
}

.container {
  width: 100%;
  display: grid;
  grid-template-rows: 1fr 400px 400px 400px 400px 400px 400px 10px;
  gap: 1em;
}

@media only screen and (min-width: 700px) {
.container {
  width: 900px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 80px 400px 400px 400px 10px;
  gap: 1em;
}
}

.item {
  border: .1rem solid black;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  background-color: rgb(240,240,240);
  padding: 1em;
}

.item:hover {
  background-color: rgb(220,220,220);
} 

.header {
  font-size: 80%;
}

@media only screen and (min-width: 700px) {
  .header {
    grid-column: 1 / 3;
    font-size: 80%;
  }
}

.header h1 {
  margin: 0;
  text-align: center;
}

.pic {
  width: 100%;
  height: 80%;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.title {
  width: 100%;
  margin-top: .5em;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5em;
}

a {
  text-decoration: none;
  text-align: center;
}


.footer {

}

@media only screen and (min-width: 700px) {
.footer {
  grid-column: 1 / 3;
}
}

.footer .info {
  text-align: center;
}

.mp1 .pic {
  background-image: url("assets/mp1.png");
}

.mp2-1 .pic {
  background-image: url("assets/mp2-1.png");
}

.mp2-2 .pic {
  background-image: url("assets/mp2-2.png");
}

.mp3 .pic {
  background-image: url("assets/mp3.png");
}

.mp4 .pic {
  background-image: url("assets/mp4.png");
}

.project .pic {
  background-image: url("assets/project.png");
}