demo-container { display: block; border: 2px solid rgb(189, 189, 189); padding: 25px 10px 10px; border-radius: 4px; width: 300px; }
demo-object { display: block; background-color: rgb(224, 255, 253);
position: absolute;
position-anchor: --infobox;
position-area: top center;
margin: 0;
background-color: darkkhaki;
border: 1px solid darkolivegreen;
}

block-block {
anchor-name: --infobox;
background: palegoldenrod;
font-size: 3em;
width: fit-content;
border: 1px solid goldenrod;
margin: 100px auto;
}
.element {position-area: top center;}