android x design dependency

try this:

implementation 'com.google.android.material:material:1.0.0'

implementation 'com.google.android.material:material:1.2.0-alpha02'

Just copy paste this one in to your dependencies.

To know equivalent for new Androidx Artifacts from old build artifacts, please refer the below link

https://developer.android.com/jetpack/androidx/migrate/artifact-mappings

note: answer by Poyyamozhi Ramakrishnan is correct and I posted my answer for better understanding.