Please solve the programming task below using a self-contained code snippet in a markdown code block.

You are given two strings of the same length s and t. In one step you can choose any character of t and replace it with another character.
Return the minimum number of steps to make t an anagram of s.
An Anagram of a string is a string that contains the same characters with a different (or the same) ordering.
 
Please complete the following python code precisely:
```python
class Solution:
    def minSteps(self, s: str, t: str) -> int:
```