Here is how we can wrap text content element by custom div class.
temp.text < tt_content.text
tt_content.text = CASE
tt_content.text {
key.field = layout
0 < temp.text
0.stdWrap.innerWrap = <div class="layout-one">|</div>
1 < temp.text
1.stdWrap.innerWrap = <div class="layout-two">|</div>
2 < temp.text
2.stdWrap.innerWrap = <div class="layout-three">|</div>
}
Similarly we can wrap image content element by
temp.image < tt_content.image