body
{
    background-image: url(img/milky-way.jpg);
    background-size: cover;
    margin: 0;
    padding: 0;
    font-size: 0;
    position: relative;
}

canvas
{
    width: 100vw;
    height: 100vh;
}

.container
{
    width: 400px;
    height: 400px;
    margin: auto;
}

.wall
{
    display: inline-block;
    width: 33px;
    height: 33px;
    background-color: red;
    z-index: 2;
}

.sound
{
    position: absolute;
    font-size: 30px;
    left: 2%;
    top: 2%;
    color: goldenrod;
    cursor: pointer;
}

.score
{
    position: absolute;
    font-size: 30px;
    right: 5%;
    top: 2%;
    color: goldenrod;
    margin: 0;
}

.lives
{
    position: absolute;
    font-size: 30px;
    color: #c32828;
    left: 2%;
    bottom: 2%;
}

.restart
{
    position: absolute;
    top: 25%;
    left: 25%;
    background-color: #13314D;
    z-index: 1;
    width: 50%;
    height: 50%;
    opacity: 0.9;
    display: none;
    font-size: 40px;
    color: goldenrod;
    text-align: center;
    padding: 0px 40px;
    box-sizing: border-box;
    border-radius: 15px;
    cursor: pointer;
}

.restart h2
{
    text-transform: uppercase;
}