public class BoxScreen extends HandledScreen<BoxScreenHandler> {
    // A path to the gui texture. In this example we use the texture from the dispenser
    
    private static final Identifier TEXTURE = Identifier.ofVanilla("textures/gui/container/dispenser.png");
    // For versions before 1.21:
    // private static final Identifier TEXTURE = new Identifier("minecraft", "textures/gui/container/dispenser.png");

    public BoxScreen(BoxScreenHandler handler, PlayerInventory inventory, Text title) {
        super(handler, inventory, title);
    }

    @Override
    protected void drawBackground(DrawContext context, float delta, int mouseX, int mouseY) {
        RenderSystem.setShader(GameRenderer::getPositionTexProgram);
        RenderSystem.setShaderColor(1.0F, 1.0F, 1.0F, 1.0F);
        RenderSystem.setShaderTexture(0, TEXTURE);
        int x = (width - backgroundWidth) / 2;
        int y = (height - backgroundHeight) / 2;
        context.drawTexture(TEXTURE, x, y, 0, 0, backgroundWidth, backgroundHeight);
    }

    @Override
    public void render(DrawContext context, int mouseX, int mouseY, float delta) {
        renderBackground(context, mouseX, mouseY, delta);
        super.render(context, mouseX, mouseY, delta);
        drawMouseoverTooltip(context, mouseX, mouseY);
    }

    @Override
    protected void init() {
        super.init();
        // Center the title
        titleX = (backgroundWidth - textRenderer.getWidth(title)) / 2;
    }
}