:root {
  --blue: #000000;
  --blue_light: #9C9C9C;
  --blue_ll: #FFFFFF;
  --green: MediumSeaGreen;
  --red: #FF0000;
}
/* MediumSeaGreen #3CB371   */
/*   #0e406e   #707FEFE3    color #3CB371  #0E406E rgb(60,179,113)
rgba(14,64,110,0.5)   */
* {
  margin: 0;
  box-sizing: border-box;
}

body {
  font-family: "Lucida Sans", sans-serif;
  color: var(--blue_ll);
}

.grid-container {
  display: grid;
  grid-template-areas:
    'header header header header header header'
    'menu main main main main right'
    'footer footer footer footer footer footer';
  gap: 10px;
  background-color: var(--blue);
  padding: 10px;
}

.grid-container > div {
  padding: 10px;
  font-size: 16px;
}

.item1 {
  grid-area: header;
  background-color: var(--blue_light);
  text-align: center;
  color: #ffffff;
}

.item1 > h1 {
  font-size: 40px;
}

.item2 {
  grid-area: menu;
  }
  
.item2 ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
}

.item2 li {
  padding: 8px;
  margin-bottom: 7px;
  background-color: var(--blue);
  color: #ffffff;
}

.item2 li:hover {
  background-color: var(--blue);
}
  
.item3 {
  grid-area: main;
}

.item3 > h1 {
  font-size: 30px;
  margin-bottom: 7px;
}

.item3 > p {
  margin-bottom: 7px;
}

.item4 {
  grid-area: right;
  border: 2px solid #0099cc;
  background-color: var(--blue);
  padding: 15px;
  color: #000000;
}

.item4 > h2 {
  font-size: 20px;
  padding-bottom: 10px;
}

.item4 li {
  padding: 5px;
  margin-bottom: 5px;
}

.item5 {
  grid-area: footer;
  background-color: var(--blue);
  color: #ffffff;
  text-align: center;
}

@media only screen and (max-width: 600px) {
  .item1 {grid-area: 1 / span 6;}
  .item2 {grid-area: 2 / span 6;}
  .item3 {grid-area: 3 / span 6;}
  .item4 {grid-area: 4 / span 6;}
  .item5 {grid-area: 5 / span 6;}
}

@media only screen and (min-width: 600px) {
  .item1 {grid-area: 1 / span 6;}
  .item2 {grid-area: 2 / span 1;}
  .item3 {grid-area: 2 / span 4;}
  .item4 {grid-area: 3 / span 6;}
  .item5 {grid-area: 4 / span 6;}
}

@media only screen and (min-width: 768px) {
  .item1 {grid-area: 1 / span 6;}
  .item2 {grid-area: 2 / span 1;}
  .item3 {grid-area: 2 / span 4;}
  .item4 {grid-area: 2 / span 1;}
  .item5 {grid-area: 3 / span 6;}
}
a:link {
  color: var(--blue_ll);
  background-color: transparent;
  }
  a:hover {
  color: var(--red);
  background-color: transparent;
  text-decoration: underline;
}
a:active {
  color: yellow;
  background-color: transparent;
  text-decoration: underline;
}
a:visited {
  color: var(--green);
  background-color: transparent;
  text-decoration: none;