* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

#canvas1 {
    position: absolute;
    /* width: 100%;
    height: 100%; */
    top: 50%;
    left: 50%;
    translate: -50% -50%;
    background: url("../img/background1920x1080.png");
    background-size: cover;   
    background-position: center; 
}

.controls {
    position: absolute;
    left: 5px;
    bottom: 5px;
    display: flex;
    flex-direction: column;
}

.controls > button {
    width: 50px;
    height: 50px;
    background: transparent;
    color: white;
    font: 30px Bangers;
    margin: 5px;
    border: 1px solid white;
    box-shadow: 1px 1px 1px black;
    text-shadow: 1px 1px 1px black;
    transition: 0.3s;
}

.controls > button:hover, .controls > button:focus {
    background: #722c8a;
    box-shadow: 4px 4px 4px black;
    text-shadow: 1px 1px 1px black;
}

.assets {
    display: none;
}

@media screen and (max-width: 900px){
    #canvas1 {
        background: url('../img/background1920x1080.png');
        background-size: cover;
        background-position: center;

    }   
}