Read the statement by Michael Teeuw here.
MMM-CalendarExt3
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 Thanks folks, 
 much appreciated that you invest your free-time to help simpletons like me.
 My custom.css now includes.CX3 .cellHeader .cellDate { flex-grow: 0; } .CX3 .cw::before { content: "CW"; margin-right: 0px; }which seems to achieve what I was/am looking for. 
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 @BKeyport here is my dev window steps 
 the background area for the today highlight is smaller than the font size (set with the cx3-… properties)
  now w the element selected 
  can’t copy/paste the selector list bottom, 
 so copy the element it self
  
 and paste into editor on custom.css
  now keep/remove the text to match the bottom selector row div .cell.today.thisMonth.thisYear.year_2025.month_3.date_25.weekday_2 div.cellHeader div.cellDateadd the module name in front .CX3 div .cell.today.thisMonth.thisYear.year_2025.month_3.date_25.weekday_2 div.cellHeader div.cellDate { }then copy the change in the dev window 
  and paste into custom.css inside the braces of the thing you just added .CX3 div .cell.today.thisMonth.thisYear.year_2025.month_3.date_25.weekday_2 div.cellHeader div.cellDate { height: 1em; text-align: left; }now. you MIGHT know (or not) that we ONLY need to target the ‘today’ and ‘celldate’ classes , not JUST this ACTUAL date (mar 25) so we should shorten the selector… so it also works tomorrow .CX3 div .cell.today div.cellDate { height: 1em; }every module it different, so it takes some thinking about what you are seeing 
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 Hi - I have struggled with this for the past 24 hours and I cannot figure it. If someone can provide me ELI5 instructions I would appreciate it as CSS is not my strong suit. I am changing things in the custom.css file - perhaps what I want to do cannot be changed there. I would like to change the width and height of the calendar boxes, regardless of the data in them. I have figured out how to increase font size, but the cell/box size does not grow dynamically as thought it would. Any help appreciated. .CX3 { font-size: 20px; }
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 @cricket you need to change the – variables he has defined… see the README.md file 
 https://github.com/MMRIZE/MMM-CalendarExt3?tab=readme-ov-file#styling-with-cssfrom configuration means fontSize '18px' Default font size of this module. eventHeight '22px' The height of each event.
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 @sdetweil 
 Believe me I have and have looked at it at least times, I simply don’t understand how to achieve what I am asking. I have figured out the font size by what I included above. But I don’t understand how change the size of the day cell/box even if it is empty.
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 @cricket so, ‘simple’ way is to add more event lines to the box which will make it taller maxeventlines: 10 or whatever maxevents*lineHeight = size of box. 
 lineHeight = fontsize+4 (in the default config)all of the important values are configurable in the module config, so you dont have to mess with css for this 
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 @sdetweil said in MMM-CalendarExt3: @cricket so, ‘simple’ way is to add more event lines to the box which will make it taller maxeventlines: 10 or whatever maxevents*lineHeight = size of box. 
 lineHeight = fontsize+4 (in the default config)all of the important values are configurable in the module config, so you dont have to mess with css for this Thank you very much for this - I will give this a go! 
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 @sdetweil 
 Outstanding - this did exactly what I was looking for. I also a the appreciate the explanation. I am catching on slowly!
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 Last thing for me on this - is there a way to move the module down? My screen is portrait and it covers up some top modules. I am trying to move the module down with .region.middle.center { top: 50px; }I have experimented with positive and negative numbers with wild results. It pushes the calendar off the screen a the top and only shows about half LOL. Should I be modifying this in the module section of the config.js file or in the custom.css file as above. With the right commands of course. 
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 @cricket awesome! 
