div.application-editor-wrapper {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0px;
    left: 0px;
    display: grid;
    grid-template-columns: 300px auto 60px;
    grid-template-rows: auto;
    overflow: hidden;
    grid-template-areas: "left-sidebar center-container toolbar";
}