Hiding sidebar 7.0

Hello,

I was able to successful hide my sidebar on one page of my site (Wells 7.0) but after adding another set of code, it stopped working... Can anyone help me troubleshoot here? I'm at a loss (The second set of code also doesn't work).

Thank you!

Here is the code:

#collection-66617a3bd66c3246668fd5c2 {
  #headerWrapper {
    display: none;
  }
}

<style>
body {
    background-image: url(https://images.squarespace-cdn.com/content/v1/55118900e4b05b9bd93e8e97/ed157f6e-d264-4c52-8019-b36bac70aff0/Harvest+background.png?format=2500w) !important;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
}
</style>

Et voilà! Thank you so much, Sam.