body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 20px;
  padding: 0 20px 30px 0;
  line-height: 1.4;
}
.flex-container {
  /* margin-top: 20px; */
  display: flex;
  flex-wrap: nowrap;
  width: 100%;
  height: 500px;
  justify-content: center;
  transition: 2s all ease;
  transform: rotateZ(180deg);
  transform: rotateX(180deg);
}

.flex-item {
  background: cyan;
  border: 1pt solid black;
  width: 10px;
  transition: 0.1s all ease;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
}

#input {
  display: flex;
  padding: 10px;
  justify-content: space-between;
}