body{
    text-align: center;
    background-image: url(../img/Background.png);
    background-repeat: no-repeat;
    background-size: cover;
    align-content: center;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

header {
    font-size: larger;
}

#grille {
    margin: auto;
    display: grid;
    grid-template-columns:1fr 1fr 1fr;
    max-width: 100px;
    justify-content: center;
}

.case:hover{
    background-color: cornsilk;
    opacity: .5;
}

#grille .case {
    border: 1px solid rgb(0, 0, 0);
    height: 15vmin;
    width: 15vmin;
    display: grid;
    justify-content: center;
    align-items: center;
    font-size: 50px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

#replay {
    margin: 3vw;
    padding: 20px;
    text-decoration: none;
    border: none;
    border-radius: 5px;
}

#main {
        width: 100%;
            height: 100vh;
            background-image: url(../img/Background.png);
            background-repeat: no-repeat;
            background-size: cover;
            position: absolute;
            top: 0px;
            left: 0px;
            align-content: center;
            color: white;
            font-weight: bold;
}

.start {
    transform: translateY(-1000vh)
}

#Play {
    font-weight: bolder;
    font-size: 5vw;
    cursor: default;
}

#message {
    font-weight: bold;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    font-size: larger;
    margin: 3vw;
}

h1 {
    color: white;
    text-shadow: 1px 1px 10px black;
}

h2 {
    font-size: 10vw;
}