body {
    background-color: rgba(183, 183, 183, 0.25);
    font-family: Arial, sans-serif;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #f8f8f8;
    padding: 20px;
    text-align: center;
}
.container {
    display: flex;
}
.main-container {
    margin: auto;
    width: 400px;
    height: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
#start-button {
    margin: 16px;
}
.controls {
    margin: 16px;
    display: flex;
    flex-direction: column;
}
.controls p {
    margin: 4px;
}
.grid {
    width: 200px;
    height: 400px;
    display: flex;
    flex-wrap: wrap;
    background-color: black;
    border: 1px ridge black;
}
.cell {
    border: 1px rgb(0, 0, 0) inset;
}
.grid div {
    height: 18px;
    width: 18px;
    border: 1px rgb(0, 0, 0) inset;
}
.grid div:nth-last-child(-n+10) {
    height: 18px;
    width: 18px;
    border: 1px gray hidden;
}
.tetromino {
    background-color: blue;
    border-color: white;
}
.mini-grid{
    margin-left: 24px;
    width: 80px;
    height: 80px;
    display: flex;
    flex-wrap: wrap;
    background-color: yellow;
}
.mini-grid div {
    height: 20px;
    width: 20px;
}