body {
    font-family: Arial, sans-serif;
}

.titrePage {
    font-size: 30px;
    text-align: center;
    margin-top: 50px;
    background-color: aquamarine;
}

.container {
    display: flex;
    justify-content: space-around;
    margin-top: 50px;
}

.controls, .preview, .code {
    width: 30%;
}

.grid {
    display: grid;
    border: 1px solid black;
}

.grid-item {
    border: 1px solid black;
    padding: 10px;
}