How to get elements of a certain class (xpath)?

Question

XPath

how to get the

<a class="class1 class2"> 
<i class="class1 class4 class5">
<b class="class1">
<a class="class1-class7">

so that only those tags with the class class1 are selected? (all except the last one)

//*[contains(@class, 'class1')].  не подходит берет последний элемент
//*[@class= 'class1'].  не подходит

Answer 1

What about such an option?

//*[contains(concat(' ', normalize-space(@class), ' '), ' class1 ')]

Answer 2

No, it was printed.