No Alpha in URP Ilt shader gtaph

Hello! Ihave created URP Ilt shader gtaph but there is no alpha node. So I created in and it is not active(grey).
Every time i make chages in shader it is disappiring if it is not connected

 

Because you're Surface Type is Opaque. You need to switch your Shader to the Transparent Surface Type. You can do this in the Graph Inspector under the tab Graph Settings. See my screenshot for more visual help.

 

Thank you!