Materialize CSS: how to add search to nav?

Question

css

When adding a search form to the nav, everything breaks. What is the right way to add a search field on the left, setting its size, say 200px? It seems to be just everything with this framework, but the instructions are very scarce.
codepen.io/dhatt/pen/zKoyJV
Added a link to the site with the search bar - materializecss.com/navbar.html

Answer 1

1) form add class="left"
2) remove logo
3)???
4) PROFIT!