Getting the type of parameters in a parameter pack

So let's say we have the following code:

#include <stack>

template<class... Args>
auto make_stack(Args&&... args)
{
    std::stack<INSERT_TYPE_HERE> s;
    return s;
}

int main()
{
    auto s = make_stack(1, 2.2, 3); //would be std::stack<double>
    auto s2 = make_stack(1l, 2, 3); //would be std::stack<long>
}

How would I find the common type of the arguments in the parameter pack?