html{
    height: 100%;
}

body{
    background-color:rgb(0, 0, 0);
    position: relative;
    padding: 0;
    margin: 0;
    box-sizing:border-box;
    height: 100%;
}

.container{
    margin: auto;
    text-align: center;
    width: 100%;
    height: 100%;
}

canvas{
    box-sizing:border-box;
    border:1px solid black;
    margin: auto;
    display: inline-block;
    text-align: center;
    position: relative;
    max-width: 100%;
    height: auto;
    max-height: 100%;
    background: url("./assets/background.jpg") no-repeat;
    background-size:cover;
    background-position: center;
}
h3{
    position: absolute;
    width: 100%;
    top: 0%;
    text-align: center;
    color: #fff;
}
@media (max-width:640px){
    .container{
        width:100vw;
        height: 100vh;
        margin: auto;
    }
}