Adding node preview css.

Closes #3214332

added 1 commit

• d370eb06 - fixed order/properties-order issues in nodepreview

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added 44 commits

• d370eb06...d5d6431e - 42 commits from branch project:11.x
• 62f92493 - Adding node preview css.
• 5008d128 - fixed order/properties-order issues in nodepreview

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added 8 commits

• 5008d128...5c2760eb - 6 commits from branch project:11.x
• cd735942 - Adding node preview css.
• 1017cb7b - fixed order/properties-order issues in nodepreview

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added 1 commit

• 5221a6bd - Added Class and Icon for the back button

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