@media only screen and (min-width: 860px) {
    
html, body, .grid-container { height: 100%; margin: 0; }

.grid-container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  gap: 0px 0px;
  background-image: -webkit-linear-gradient(150deg, #FFFFFF 50%, #FFDE00 50%);
  grid-template-areas:
    "Latio Latio Metrum Metrum"
    "Latio Latio Metrum Metrum"
    "Latio Latio Metrum Metrum";
}

.Latio { grid-area: Latio; }

.Metrum {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 0px 0px;
  grid-template-areas:
    ". . ."
    ". . .";
  grid-area: Metrum;
}

.center {
 position: relative;
  top: auto;
    left: 90%;
  max-width: 60%;
  height: auto;
    margin-right: -20%;
    transform: translate(-20%, -700%)
    
}
.center-latio {
 position: relative;
  top: 2%;
    left: 10%;
  max-width: 60%;
  height: auto;
    margin-right: -80%;
    transform: translate(-80%, -200%)
    
}
}
  @media only screen and (max-width: 560px) {
    
html, body, .grid-container { height: 100%; margin: 0; }

.grid-container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  gap: 0px 0px;
  background-image: -webkit-linear-gradient(90deg, #FFFFFF 50%, #FFDE00 50%);
  grid-template-areas:
    "Latio Latio Metrum Metrum"
    "Latio Latio Metrum Metrum"
    "Latio Latio Metrum Metrum";
}

.Latio { grid-area: Latio; }

.Metrum {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 0px 0px;
  grid-template-areas:
    ". . ."
    ". . .";
  grid-area: Metrum;
}

.center {
  margin: 0;
   position: absolute;               /* 2 */
   top: 80%; 
  max-width: 30%;/* 3 */
   transform: translate(-50%, 0) }   /* 4 */
    
}
.center-latio {
margin: 0;
   position: absolute;               /* 2 */
   top: 10%;    
  max-width: 30%;/* 3 */
   transform: translate(30%, 0) } 
}