<!DOCTYPE html> <html> <head> <title>Advanced Text Editor</title> <style> body { font-family: Arial, sans-serif; margin: 0; padding: 0; } .editor-container { display: flex; flex-direction: column; height: 100vh; box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1); } .toolbar { display: flex; align-items: center; padding: 8px; background-color: #f0f0f0; border-bottom: 1px solid #ccc; box-sh...