.fixed-conted {
display: flex;
    position: fixed;
    left: 0;
    top: 0;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.18);
    z-index: 10;
}

.canvas-element {
    width: 100% !important;
    height: 100%!important;
    display: inline-block;
    position: relative;
    max-width: 550px;
    max-height: 400px;
    margin-top: -25px;
}
.canvas-element #canvas {
	width: 100% !important;
	height: auto !important; 
}

.canvas-element #dom_overlay_container {
 
    width: 100% !important;
    height: 100% !important;
    max-width: 550px;
    max-height: 400px;
}