Correct

福如东海

/ fú rúdōng hǎi / 
Strokes

Definition

may your happiness be as immense as the East Sea (idiom)

Example

Definition

boundless happiness [a term of congratulation]

1
Zhù
祝
nín
您
fúrúdōnghǎi
福如东海
  
,
shòubǐnánshān
寿比南山
  
。

Wish you a long life and boundless happiness.