html, body {
    padding: 0;
    margin: 0;
    height: 100vh;
    overflow: hidden;
}

* {
    font-family: sans-serif;
    text-align: center;
}

table {
    border-collapse: collapse;
    margin: 50px auto;
}

td {
    width: 100px;
    height: 100px;
    border: 1px solid black;
    cursor: pointer;
    text-align: center;
    vertical-align: middle;
    font-size: 3rem;
}

#victoire-message {
    background-color: rgba(192, 62, 62, 0.5);
    font-weight: bold;
    color: white;
    font-size: 5rem;
    transition: top 1s;
    height: 100vh;      
    position: absolute;
    top: 100vh;
    width: 100vw;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cellule-x{
    background: rgb(0,0,255);
    background: linear-gradient(90deg, rgba(0,0,255,0.5) 0%, rgba(0,0,255,0.5) 100%);
}

.cellule-o{
    background: rgb(255,0,0);
    background: linear-gradient(90deg, rgba(255,0,0,0.5) 0%, rgba(255,0,0,0.5) 100%);
}