Brine Boxed-in footer code not working in mobile

Site URL: https://drcreative.squarespace.com

I followed these exact directions for a boxed-in footer: https://thirtyeightvisuals.com/blog/boxed-footer-squarespace

But the mobile code isn't working. This is the exact code I have in CSS editor: 

@media screen and (min-width: 640px) {
  .Footer-inner {
    display: flex;
  }
  .Footer-blocks--top,
  .Footer-middle,
  .Footer-blocks--bottom {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    border: 1px solid #ddd;
    padding: 20px;
  }
}
.Footer-inner {
  display: flex;
}
.Footer-blocks--top,
.Footer-middle,
.Footer-blocks--bottom {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid #ddd;
  padding: 20px;
}

This is what it looks like on mobile view. Why????

What is site access password?

@tuanphan 

drcreative.squarespace.com

Password: drcreative

On 2/25/2020 at 10:20 PM, Mallorycs82 said:

@tuanphan 

drcreative.squarespace.com

Password: drcreative

Have you solved yet?

--

@tuanphan not yet!

@tuanphan Any thoughts on this one? :) :) 

On 2/28/2020 at 2:26 AM, Mallorycs82 said:

@tuanphan not yet!

On 3/1/2020 at 3:43 AM, mallorycs said:

@tuanphan Any thoughts on this one? :) :) 

Add to Home > Design > Custom CSS

@media screen and (max-width:640px) {
.Footer-inner.clear {
    flex-direction: column;
}
}

On 3/2/2020 at 5:35 AM, tuanphan said:

@media screen and (max-width:640px) { .Footer-inner.clear { flex-direction: column; } }

@tuanphan yay that worked!!! Thank you so much!!