简约线条风消防主题图标元素消防栓消防车火焰斧头铲子

minimalist fire safety icons, deep blue and white color scheme, icons include fire hydrant, ladder, tombstone, fire truck, emergency exit, flame, fire extinguisher, fire badge, helmet, fire boots, firefighter gear, mask, shovel, crowbar, axe, fire extinguisher, evenly distributed, independent, professional and safe, clean background, clear and professional, detailed