#d_mc-sonic {
width: 100%;
height: 100%;
z-index: 999999999999;
position: fixed;
top: 0;
left: 0;
background-color: rgba(0, 0, 0, .7);
border: 0px none transparent;
margin: 0;
display: flex;
justify-content: center;
align-items: center;
}
#mc-sonic { height: 40%;
z-index: 999999999999;  left: 0;   display: flex;
justify-content: center; }