Container class is not the same as the others when using same class label

Here is my site Read-Only: https://preview.webflow.com/preview/chelsea-woodss-fantastic-project?utm_medium=preview_link&utm_source=designer&utm_content=chelsea-woodss-fantastic-project&preview=0b4ad8558c1fcf42bde46f366cd3af76&mode=preview

Can anyone please help me, I have a class called container which is applied to the projects section and landing page section so that it is a certain width but when I’m applying it to the form like what’s in the video Build a reusable contact form — Build a portfolio site in Webflow, Day 4 - YouTube the container just shows up as a line not as a box to put things in. (I’m learning webflow)