body { 
    margin: 0; 
    overflow: hidden; 
    display: flex; 
    justify-content: center; 
    align-items: center; 
    height: 100vh; 
    background-color: #321261; 
} 
.header{
    margin: 0;
    padding: 0;
    position: absolute; 
    top: 0;
    left: 0;
    height: 10%;
    width:100%;
    background-color: rgb(152, 101, 0);
    overflow: hidden;
    font-size: 7vmin;
    font-family: "comic sans";
    color:#fff;
    text-align: center;
}

/*
canvas {
    width: 100%;
    height: 100%;

#game-container { 
    width: 800px; 
    height: 600px; 
    border: 2px solid #fff; 
}