Having trouble customizing CSS

[RealCleverTurtle]

The site I am working one a rebuild of a Concrete 5.8 site that used Pixel 2. I had to install Concrete v.9 from scratch (for reasons unrelated to Pixel) and am working on a total rebuild. But the CSS customization I am tying to deploy is not working. I have the variables.dev.scss and custom.dev.scss files in the /application/config/theme_pixel9 folder and copied some custom CSS (below)from the previous Pixel setup. But I am not seeing the customized CSS.

The italics are a serif font, though I am only using Montserrat, and the TopBar height is the default, not the number specified in the variables.dev.scss file. The H1-H6s are not displaying with the custom color or the margins specified, and the link color is also not the custom one specified.

Caching is turned off, though I have also emptied the cache via the dashboard, as well the cache folder manually via ftp (and tried other browsers), but I am not seeing these customizations.

You can view the site at https://commonwealthchorale.com

Your help is most appreciated. Thanks.

variables.dev.scss
$body-font: 'Montserrat', sans-serif;
$heading-font: 'Montserrat', sans-serif;
$subheading-font: 'Montserrat', sans-serif;
$secondary-font: 'Montserrat:ital', sans-serif;

$header-height: 200px;
$topbar-height: 30px;

custom.dev.scss

a {
text-decoration: none !important;
color: #3F833B;

&:hover {
	color: #222;
}

img {
	border: none;
}

}

h1 {color: rgb(169, 82, 93);
line-height: @line-height-base;
margin: 0 0 0 0;
font-family: @heading-font; }

h2 {color: rgb(169, 82, 93);
line-height: @line-height-base;
margin: 8px 0 0 0;
font-family: @heading-font; }

h3 {color: rgb(169, 82, 93);
line-height: @line-height-base;
margin: 0 0 0 0;
font-family: @heading-font; }

h4 {color: rgb(169, 82, 93);
line-height: @line-height-base;
margin: 3px 0 3px 0;
font-family: @heading-font; }

h5 {color: rgb(169, 82, 93);
line-height: @line-height-base;
margin: 12px 0 3px 0;
font-family: @body-font; }

h6 {color: rgb(169, 82, 93);
line-height: @line-height-base;
margin: 0 0 0 0;
font-family: @body-font; }