* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    font-family: sans-serif;
}

.page-memory-game {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    text-align: center;
    background: transparent url(../img/wood-bg.jpg) no-repeat center center;
}

.page-title {
    width: 100%;
    color: #fff;
    font-weight: 900;
    text-shadow: #000 0 1px 1px;
    text-transform: uppercase;
}
.page-footer {
    width: 100%;
    height: 50px;
    display: flex;
    justify-content: center;
}