Are you referring to this?
If so, I havenāt used that feature, so I wonāt be able to help with that, sorry. Just looking at the docs, there is a strong emphasis on where those themed definitions should be added, and that is not under a dashboard view.
Check this decluttering template as an example:
decl_horizontal_stack:
default:
- VALUE_WIDTH_1: 50%
- VALUE_OVERFLOW_VISIBLE: true
- OBJ_KEEP:
background: false
box_shadow: false
margin: false
outer_padding: false
border_radius: false
card:
type: custom:stack-in-card
keep: '[[OBJ_KEEP]]'
mode: horizontal
cards: '[[CARDS]]'
card_mod:
style:
hui-horizontal-stack-card $: |
div#root > :first-child {
width: [[VALUE_WIDTH_1]];
flex: auto;
}
div#root > :last-child {
width: calc(100% - [[VALUE_WIDTH_1]]);
flex: auto;
}
.: |
ha-card {
box-shadow: none;
{% if [[VALUE_OVERFLOW_VISIBLE]] == true %}
overflow: visible !important;
{% endif %}
}
Using the template:
type: vertical-stack
cards:
- type: custom:decluttering-card
template: decl_horizontal_stack
variables:
- CARDS: &ref_cards
- type: entities
entities:
- entity: sensor.cleargrass_1_temperature
name: Indoor
- type: custom:bar-card
entities:
- entity: input_number.test_level_1
positions:
icon: 'off'
name: 'off'
- type: custom:decluttering-card
template: decl_horizontal_stack
variables:
- CARDS: *ref_cards
- VALUE_WIDTH_1: 60%
- type: custom:decluttering-card
template: decl_horizontal_stack
variables:
- CARDS: *ref_cards
- VALUE_WIDTH_1: 70%
- type: custom:decluttering-card
template: decl_horizontal_stack
variables:
- CARDS:
- type: entities
entities:
- entity: sun.sun
- entity: sun.sun
- entity: sun.sun
- type: custom:mini-graph-card
entities:
- entity: sensor.cleargrass_1_co2
name: CO2
height: 250
show:
state: true
name: true
icon: false
labels: false
points: false
- VALUE_WIDTH_1: 65%
- OBJ_KEEP:
background: false
box_shadow: true
margin: false
outer_padding: false
border_radius: false
- type: entities
entities:
- sun.sun
- type: custom:decluttering-card
template: decl_horizontal_stack
variables:
- CARDS:
- type: custom:hui-element
row_type: sensor-entity
entity: sensor.cleargrass_1_temperature
name: Indoor
- type: custom:slider-entity-row
entity: input_number.test_number
full_row: true
- VALUE_WIDTH_1: 40%
- entity: sensor.cleargrass_1_co2
Surely the template does not cover all possible needs. At least it gives you an example of customizing a width.
In another card i used, i didnāt wanted a name, and with name: false i got the entity-name instead(how funny is that) ā¦ i went to Configuration/entities, gave the entity a (.) dot 
ā¦ as name, i know i doesnāt move/remove it , but now itās only a tiny dot, i hardly see with my old eyes and dirty glasses
ā¦ ahhh i just got another idea ā¦ write whatever i want, style the text same color as background 
yes, thats a known trick 
however, I dont want to Remove the id, I want to move itā¦ but its fairly ok now. Its more that Id like to be in control, and this still leaves me wantingā¦
I wonder how many Themes(and card design) the new 2022.3 fā¦ up, question is will card-mod, card-mod-themes eventually (soon) become āobsoleteā as-well ā¦ luckily i only have 2 Themes, 1 for View and 1 for Cards both with āinspirationā from when i started with Card-mod ā¦ i know i could have started āconvertingā paper-elements, but ā¦ now āupdatesā to various cards start to ādrop-inā ā¦ is it best to wait, to see how these āfalls outā ? ā¦ Thomasloven is first out with layout and auto-entities
Donāt hope so. But the rebuilding of card-mod has been there in most of the releases in the past already. So we are used to do it. 
ok, yes im ānewā here, so still alot of my designing is in āexperimentalā state, but i started to get a grip of it, so the āpaper-elementsā ( in Theme controlling various colors, with reference to few āstandardā colors, now inside card clicking āshowing code editorā i got white background/white txt 
ā¦ in regards to ārebuildingā of cards, they seems to āusuallyā include nice enhancements and new features.
PS: was first thinking wtf happend here, did they moved the āinputsā ?
Hey Guys,
Would anyone be able to assist me in styling the divider lines highlighted in my screenshot below. Im really struggling to give this bit to work. The research I have done so far would suggest divider line colour is set by --secondary-text-color: however it doesnāt seem to change the colour, I have set this at both the card style level and in my theme but neither seem to be taking effect.
- type: 'custom:home-feed-card'
style: |
ha-card {
margin-top: 0px;
margin-bottom: 20px;
margin-left: 35px;
margin-right: 35px;
background-color: none;
border: 0px;
background: none;
box-shadow: none;
line-height: 18px;
color: #8e9393;
font-size: 12px;
--secondary-text-color: #8e9393;
}
card_id: main_feed
show_empty: false
id_filter: ^event*
more_info_on_tap: false
state_color: false
show_icons: false
more_info_on_tap: false
entities:
is that code-snippet from ur card ? ( no specified color for divider as far as i can see), how does i look like in ur Theme ?
have you tried
Previous posts above suggest that the following should be used to set the colour, but this code doesnāt seem to make any difference in either the card or theme. Colour is defaulting to white in this card.
Interesting though Iāve just checked other dividers used in the entity card and they appear to be picking up the correct colour (see image below), I am assuming the theme is therefore working and perhaps the dividing lines in the feed card are referencing something else?
--secondary-text-color: #8e9393;
could be so, entities card have a HA-element, have no idea of feed-card, then try to use - type:divider ( thou i think this is special also, but -type:section , hmmm might also only work i card like entities.
what the āpurposeā of feed-card ?
PS: I dont think you can use Card-Mod on this card, it seems āDeprecatedā ā¦ try template
edit2: and remember all the ātrivialā stuff, like clear ur browser, check in other browsers , when ur working with this card
Where are you seeing reference that it is Deprecated?
not this card in particular, but in below link, you find another ink to ācustom-updaterā , ā¦ and in regards to the problems people had/have i see in " Lovelace: Home Feed Card" ā¦ i made my own āassumptionā , i would never start to use it , sorry but thatās my opinion ā¦ when was the Last Update from developer of this Card ? , thatās a part of my Assumption
PS: Sorry i mixed up the 2 cards in regards to āupdatesā , but still donāt find any āoptionsā for divider.
But i do see that it uses āentitiesā , and it should in this case be there, if possible
entities:
- entity: your.entity
name:
something:else
- type: section
* i dont know which options CSS there are for defining the "section"
but there is - type: devider
which have more options, maybe your Theme vil apply what you already have, as it's within "entities"Divider in entities-card
I tried that thing with those anchors and it worked wonderful. Thanks for that.
But saving some changes with editor in UI seems to evaluate those anchors and paste the code instead of my anchors.
Next time I would like to change something I have to do that again many times! 
@Ildar_Gabdullin thank you so much for all the examples you have provided in this post. I have spent many hours learning from your examples.
With the changes made in 2022.3 I have found that all my input (select, date, numbers) references have boxes around them now. For input_select I have eliminated the boxes using the code Iāve listed below, but after i select a new item in the dropdown box the gray box reappears until I click anywhere else on the screen.
I noticed this problem before but it nevered bothered me because it didnāt involve the input_ fields. Now it just looks ugly. Looking for help in eliminating this box, thanks
type: vertical-stack
in_card: true
cards:
- type: markdown
style: |
ha-card { margin-top: -.8em;
margin-bottom: .5em; }
content: >
## {{ states('sensor.todays_date') }}
- type: entities
style: |
ha-card { margin-top: -2em;
margin-bottom: .8em;
--mdc-select-fill-color: white;
}
show_header_toggle: false
entities:
- input_select.calendar_selection
Sorry but I dont use the UI editors, and use YAML mode.
do believen those editors strip all comments too, so these anchors might not be recognize either? As said, I wouldnāt really know, but just to be sure, do keep copies of the yaml files you make before saving in the editor
they do seems to strip commends also , and anchors, maybe i end up using yalm-mode eventually ā¦ everything else i do in notepad++
@cyn
Thanks a lot for good words!
These elements were changed in the 2022.3 and some styling for them need to be changed too.
I will prepare updated posts for these elements - a bit later (I very very hope).
Our crazy president is about to start a WW III, so I have some other jobs to do (((
stay safe