1.editBox.fullscreen{ 2 z-index: 0; 3 width: 100%; 4 height: 100%; 5 position: fixed; 6 top: 0; 7 left: 0; 8 backdrop-filter: blur(4px); 9 transition: all 2s; 10 11 } 12 13.editBox{ 14transition: all 2s; 15} 16 17button[name="prosemirror"].fullscreen { 18 z-index: -1; 19} 20 21button[name="prosemirror"].fullscreen { 22} 23