How can I apply style to a div based on condition in thymeleaf?

Solved it while posting the question,

th:style="${condition ? 'display:block' : 'display:none'}" >

would produce the necessary conditional style. If condition is true display is set to block and none if condition is false.

For admin,

th:style="${role == 'ADMIN' ? 'display:block' : 'display:none'}" >

the style is set to display:block and for other roles the block is not displayed.

In simple case it could be written as

<div th:style="${filed==null ? 'opacity:.3'}">

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