.preview-file-panel {
    position:fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    right: 0;
    width: 90%;
    height: 90%;
    z-index: 11;
    background-color: var(--bg);
    box-shadow: 0px 0px 5px #414243;
    padding: 1em;
}
.preview-file-panel > div {
    text-align: right;
}
.preview-file-panel > iframe {
    width:100%;
    height:95%;
    border: none
}