Suppose that you want to add a class to the class below only under “certain conditions”.
<div class="container"> </div>
For example, suppose this time you add a class only when it is
The conditional expression in that case is as follows.
<div class="container<%='user-container' if controller_name ='users' %>"> </div>
###※Note Be sure to leave a space before the first character of the class name you want to add.
Correct: <%='user-container' if... Wrong: <%='user-container' if...
class with such a condition, you can change or overwrite the style with CSS only under that condition, so please be sure to remember.