#background img {
    width: 100%;
    height: 100%;
    z-index: 0;
    object-fit: cover;

}

body {
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    background-color: black;
}

#background {
    padding: 0;
    margin: 0;
    height: 100%;
    width: 100%;
    overflow: hidden;
    position: absolute;
    top: 0;
}

#content {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}

body div * {
    position: relative;
}

body * {
    z-index: 100;
    font-family: 'Indie Flower', cursive;
    color: white;
}

#game {
    display: grid;
    grid-template-rows: 33% 33% 33%;
    grid-template-columns: 33% 33% 33%;
    max-width: 300px;
}

.tile {
    color: rgba(0, 0, 0, 0);
    border: 1px solid white;
    text-align: center;
    font-size: 40px;
    min-width: 100px;
    min-height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
}


.X {
    background-image: url("cat.png");
    background-repeat: no-repeat;
    background-size: 100%;
}

.O {
    background-image: url("mouse.png");
    background-repeat: no-repeat;
    background-size: 100%;
}

.hidden {
    display: none;
}

#reset {
    background: rgb(254, 42, 78);
    padding: 5px 10px 5px 10px;
    border-radius: 5px;
    color: white;
}

.clickable {
    cursor: pointer;
}