how to make font size adjusted automatically by monitor size? - plotly-dash

My dashboard's font size( like tab font size) become much bigger when running it in smaller monitor? How to make font size adjusted automatically based on monitor size? Thanks

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Web page is coming too large if user's system font size is increased (i.e. font-size: 150% as recommended by the windows)

I have created a web page using 14px as body font size. It is rendering properly in my system (windows font size set to 100%) but when someone else , whose windows font size is set to (150%) - as recommended by Windows, Web page is coming too large(everything is enlarged). Is there any way to resize (font scale) the page or manage the page so that content will come properly.
Try to use different font-scaling methods - such as em which relies on the container element (the body in your case). To my knowledge, this should alter the size of the font depending on the system font size, resolution etc.. Good luck.

what's the difference between window size and viewport size

I found a good article explains the concept of view port:
https://www.quirksmode.org/mobile/viewports.html
But I'm still a little bit confused with the differences between window size and viewport size,
Window Size:
Viewport Size:
aren't they the same thing?
Another way to say what Kateryna S. mentioned is that the viewport renders differently depending on the size of your device. For example let's say you made a responsive web app using material design that through the grid system looks one way on your desktop browser and one way on your mobile device. The Mobile device has a much smaller viewport and will render the site using the smaller grid.
For example, if you look at material design and resize your browser you will see how it will look on different viewports. If you resize your browser to the smallest size that mimic basically what you would see on your mobile device.
https://material.io/design/components/cards.html#usage
The window is just your browser view and is not related to other devices.
A viewport is the area that is visible to you on your device. A window is your browser window. The window can be as big as the viewport or smaller.

browser displays images bigger than original size

my web site displays images bigger than their original size.
The images are 20% bigger than the original created with photoshop (for example), if an image's width is 200px, the browser display is 240px.
So all my images are blured.
Do you know why?
I've found the solution!
Windows 10 has the default setting of dpi seted to 125% (search dpi into serach box and then look at "update text app and other elements"), this increase the dimension of everything in my monitor, so the images into my web site are bigger of 25%.
What I can do to prevent this behaviour on my web site and continue to use the default windows settings dpi?
Here are a part of my code:
First of all in the head tag I have this meta tags:
<meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1.0,user-scalable=1, height = device-height" />
My css hasn't any zoom or similar, and my html is like this:
<img src="/path-to-image-folder-ebook-cover.jpg">
The width of this image is 250px and in photoshop it looks like perfect, but in browser (chrome or firefox is the same) it looks bigger and blured, but, if I zoom down the browser to 80%, the image is perfect
I also had my Chrome browser displaying larger than my picture viewer app. As Daniele said. My display settings in windows were scaled to 125%. When I changed the display scale to 100%, the picture viewer app still showed the same picture size while only changing the scale of buttons and other display elements. So perhaps it's helpful info that the scale of my display does not change the image display size but everything else. The browser on the other hand is entirely changed by the system display scale. I even found that http://whatismyscreenresolution.net/ read my screen size too small according to my system display scale being set larger.

How does a CSS width react to different screens?

When I use
.class { width: 800px; }
what does it actually mean?
When I view it on my laptop screen, it shows up exactly 800 pixels wide. When I view it on my tablet screen, it shows up as 1600 pixels wide. I am guessing because my tablet might have a higher pixel density. However, the physical (when compare side-by-side) width of the element if much smaller on the tablet than on my laptop
So, my question is: When I define a dimension in CSS to an HTML element, what is the reference? How is it computed or scaled on different displays?
The reference is a logical coordinate system that might be scaled in relation to the physical screen.
It's most common on a PC that the scale is 1:1. However as screens get larger it's becoming more common with computers that have scaled up display, which may also affect the browser.
The user can also zoom in the browser, which natually affects the scaling.
Devices like tablets and phones usually have a 2:1 scaling in the browser, sometimes even more. That means that the browser reports a smaller screen size, and everything is scaled up. This also affects the media queries, so even if the physical screen is larger, your CSS might not apply as the media query uses the screen size that the browser reports.
Also, if you don't lock the viewport using a meta tag, the mobile browser will scale the page to fit the screen, so whatever page width you specify will show up the same size.

font size in percentage similar to 14px for cross resolution platforms

im looking to set my font size in my website in percentage since my whole website is based on width percentage and can be viewed from mobile the same as regular pc monitor does.
so im looking to get the font size percentage that is similar to 14px.
You should consider using em units instead.