[data-role=author] .k-blocks-field .k-button-group {
    display: none;
}
[data-role=author] .k-blocks-field footer {
    display: none;
}
[data-role=author] .k-block-options :not(:is(:first-child)) {
    display: none;
}

[data-role=author] .k-layout-field .k-button-group {
    display: none;
}

[data-role=author] .k-layout-field .k-layout-toolbar :is(:not(:first-child)) {
    display: none;
}

[data-role=author] .k-layout-field footer {
    display: none;
}