GUI Overhaul

Version 2.1 replaces Version 2.0 to resolve a shader-related issue that caused the 'Resource reload failed' error in Minecraft's latest release, version 1.21.6.

⭐What's new in version 2.1?

• A major redesign of the inventory screens and the hotbar.
• New colorful containers, chests and shulker boxes.
• Support for new GUI features in version 1.21.6 and 1.21.7, including the locator bar.
• Support for 2 new mods: OptiGUI and Optifine. Plus supporting newer version of some mods.
• New pack.png texture.
• Various other improvements.