style.css

:root {
  --background-color: #303030;
  --div-color: #28afb0;
  --button-color: #ee964b;
}

body {
  background-color: var(--background-color);
}

button {
  background-color: var(--button-color);
  border: none;
  height: fit-content;
  padding: 0.5em;
  margin: 0.25rem;
  width: fit-content;
  border-radius: 0.25rem;
}

div {
  background-color: var(--div-color);
  height: 20px;
  width: 20px;
}
.score {
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
  height: fit-content;
  width: fit-content;
  padding: 0;
  justify-content: start;
  background-color: antiquewhite;
}

.display {
  margin: 0;
}

.game {
  background-color: antiquewhite;
  border-radius: 2em;
  padding: 2em;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  width: auto;
  justify-content: space-between;
  height: fit-content;
  width: fit-content;
  margin: 0 auto;
  margin-top: 10vh;
}

.grid {
  background-color: blue;
  width: 200px;
  height: 400px;
  border: 3px solid black;
  display: flex;
  flex-wrap: wrap;
}

.previous-grid {
  height: 100px;
  width: 100px;
  display: flex;
  flex-wrap: wrap;
}

.previous-shape {
  margin: 3rem 0rem;
  height: 100px;
  width: 100px;
  border: 3px solid black;
}

.block {
  background-color: blueviolet;
}

.block2 {
  background-color: pink;
}

.block3 {
  background-color: black;
}