Replace cssnano with csso

This does better job at compressing the CSS and is lighter

gulpfile.js

@@ -14,7 +14,7 @@ function html() {
 function css() {
 	return gulp.src('./src/style/*.scss')
 		.pipe(sassSync().on('error', sass.logError))
-		.pipe(postcss([require('autoprefixer'), require('cssnano')]))
+		.pipe(postcss([require('autoprefixer'), require('postcss-csso')]))
 		.pipe(gulp.dest('./dist/'));
 }
 

package.json

@@ -15,12 +15,12 @@
 		"@mr-hope/gulp-sass": "^2.0.0",
 		"autoprefixer": "^10.2.4",
 		"browserslist": "^4.16.6",
-		"cssnano": "^5.0.2",
 		"gulp": "^4.0.2",
 		"gulp-postcss": "^9.0.0",
 		"gulp-pug": "^4.0.1",
 		"gulp-terser": "^2.0.1",
 		"postcss": "^8.2.15",
+		"postcss-csso": "^5.0.1",
 		"pug": "^3.0.1",
 		"sass": "^1.32.13",
 		"sirv-cli": "^1.0.10"