html {
  height: 100%;
  width: 100%;
  background-color: black;
  color: white;
  font-size: 4vh;
}

.banner {
  background: rgba(128, 128, 128, 0.75);
  color: black;
  text-align: center;
  padding: 2vw 2vh;
  opacity: 75%;
  transition: opacity 1.5s linear;
}

.banner:hover {
  background: gray;
  color: black;
  opacity: 100%;
}

.banner a {
  color: white;
}

#close-banner {
  position: absolute;
  right: 3vw;
  opacity: 75%;
  border: none;
  background: none;
  text-decoration: bold;
  font-size: 1em;
}

#close-banner:hover {
  opacity: 100%;
}

.main-title>h1 {
  text-align: center;
}

.main-title>h3 {
  text-align: center;
}

/* the main grid */
.main-grid {
  display: grid;
  column-gap: 1.5em;
  row-gap: 1em;
  grid-template-columns: auto auto
}

/* any item directly desended from the main grid */
.main-grid>* {
  text-align: center;
  padding: 10px;
  background-color: white;
}

/* Card Title styles */
.main-grid>[class^="item"]>.title {
  border: 2px dashed black;
  border-radius: 5px;
}

/* all items */
.main-grid>[class^="item"] {
  color: black;
  border-radius: 10px;
}

/* Specific items in the .main-grid */
.item1 {
  grid-row: span 2
}

.item1>.title {
  background-color: lightgreen;
}

.item2 {
  grid-row: span 3
}

.item2>.title {
  background-color: lightblue;
}

.item3 {
  grid-row: span 1;
}

.item3>.title {
  background-color: lightcoral;
}

.item4 {
  grid-row: span 1;
}

.item4>.title {
  background-color: #E9E630;
}

.item5 {
  grid-row: span 1;
}

.item5>.title {
  background-color: lavender;
}

/*Lists*/
ul {
  text-align: left;
}

/* special list elements */
li.star {
  list-style-type: "☆ ";
}

li.star::marker {
  font-size: 0.8em;
}

/* mobile */
@media only screen and (max-width: 5.5in) {
  .main-grid {
    display: grid;
    row-gap: 1em;
    grid-template-columns: auto;
  }

  .banner {
    display: none;
  }
}