body, html {
    height: 100%;
}

body {
    background-color: lightgray;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.game-container {
    width: 800px;
    height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.lds-dual-ring {
    display: inline-block;
    position: absolute;
    left: 0;
    right: 0;
    margin: auto;
    width: 80px;
    height: 80px;
}

.lds-dual-ring:after {
    content: " ";
    display: block;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 6px solid #fff;
    border-color: #fff transparent #fff transparent;
    animation: lds-dual-ring 1.2s linear infinite;
}

@keyframes lds-dual-ring {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

#bevy {
    z-index: 2;
}