do this https://rdrama.net/post/170794/psa-u-can-completely-disable-18/4160823#context

files/assets/css/main.css

@@ -5827,7 +5827,7 @@ html {
 	content: '';
 	display: block;
 }
-.comment-anchor:target, .unread {
+*:target, .unread {
 	background: #ffffff22 !important;
 	padding: 12px;
 	padding-bottom: 4px;

files/templates/errors/nsfw.html

@@ -15,6 +15,7 @@
 					<input type="submit" class="btn btn-danger mr-2" value="Yes, I am +18">
 				</form>
 				<div class="mt-3"><a href="/" class="btn btn-secondary">No</a></div>
+				<div class="mt-5"><a href="/settings/advanced#over_18_toggle" class="btn btn-secondary">Never show me this warning again</a></div>
 			</div>
 
 		</div>

files/templates/settings/common.html

@@ -1,7 +1,7 @@
 {%- import 'util/macros.html' as macros with context -%}
 
 {% macro toggle_section(title, id, name, flag, below_text, disabled) %}
-<div class="d-lg-flex border-bottom">
+<div id="{{id}}_toggle" class="d-lg-flex border-bottom">
 	<div class="title w-lg-25">
 		<label for="{{id}}">{{title}}</label>
 	</div>