## Elementor + W3C Validator: “Attribute alt not allowed on element div at this point” for all photo gallery items [closed]

I am trying to validate my Elementor-built website using W3C Validator (https://validator.w3.org/nu) but when it comes for a page containing a photo gallery (Elementor Gallery Pro widget), I get the error:

Error: Attribute alt not allowed on element div at this point.

Obviously, Elementor applies the alt attribute to the div containing the image rather than the image itself, so this error is produced.

Any ideas how to fix it?

## Implicit differentiation at a point

I have the following implicit equation, and I’d like to compute the derivative of p with respect to T at a specific point. In other words, if I were to create the Contourplot of this equation, with p as the y-axis, and T as the x-axis, what would be its slope a certain point. I’m using Dt[] for the derivative, but it seems to give another implicit function, whereas I’m looking a numeric value. Code is attached.

``derivativ =   Dt[p == \[Phi]/R + ((1 - \[Phi]) \[Phi] (1 - \[Lambda]) \[Beta])/(((W - T p) R + \[Phi] T) R + \[Phi]*(1 - \[Phi]) T)/(R (\[Lambda]/((W - T p) R + \[Phi] T  ) + ((1 - \[Lambda]) \[Beta] R)/(((W - T p) R + \[Phi] T) R + \[Phi] (1 - \[Phi]) T))), T]  derivativ /. {p -> 0.3192789688874802, T -> 313.206} ``

I get the following warning:

``General::ivar: 313.206` is not a valid variable. ``

The output is:

``Dt[0.319279, 313.206] == -142495. (-7.33049*10^-13 (0.16 + 1.05263 (0.2 + 1.05263 (-0.319279 - 313.206 Dt[0.319279, 313.206]))) -  9.02573*10^-14 (0.2 + 1.05263 (-0.319279 - 313.206 Dt[0.319279, 313.206]))) - 1.16674*10^-7 (0.16 + 1.05263 (0.2 + 1.05263 (-0.319279 - 313.206 Dt[0.319279, 313.206]))) ``

Is it possible to get a number for the derivative evaluated at {p -> 0.3192789688874802, T -> 313.206}? And what does that warning actually mean?

Thank you,

## From a game design point of view, what are the implications of using realistic distances in an open world map?

I’m starting an open world game and the plan is to have a single "open world" map that should contain a medieval citadel (1.4 km/2 – taking as example Palmanova in Italy) and some countryside around it.

The plan is to delimit the map with a river and some hills.

What I realized so far is that most open-world games take a specific approach when it comes to size their areas, it’s unlikely you’ll ever find a realistically sized citadel, they will tend to be all pretty small, and it will take no more than a few minutes to run from one side to the other of it.

An example that comes to mind is The Witcher 3, the Novigrad/Velen map is 15.2 km2 but the city is approx 0.25km2, which is a lot smaller than what I plan to build for my map.

To walk from one side to the other of my citadel the player should take around 15 minutes (according to Google Maps), while, as I said, in most games you can run through a city in a matter of 1 or 2 minutes.

Keep in mind there will be no vehicles and I’d still like to have the countryside take most of the map area to keep everything proportioned and realistic.

The question is, is it a good idea to build such a "large" citadel? What gameplay issues could I face? How should I handle the fact that the countryside will end up being extremely huge (and empty?) if I want to keep it properly proportioned with the citadel?

## Is a point inside a graphics group composed of multiple Polygons and FilledCurves, not all overlapping?

I have many thousands of points, and I want to check if they are inside a GraphicsGroup that is composed of many Polygons and FilledCurves, similar to GeoWithin but without having to make tedious cloud inquiries.

I get RegionMember Errors and besides I suspect RegionMember is too smart to do a simple 2D numerical True/False test efficiently.

I’ve done this once many years ago by counting if a line from the point to infinity crossed all of the polygon segments an even or odd number of times, but would expect Mathematica to have an function already.

## How to correctly point a subdomain to my local server?

I have been using No-IP.com’s free service and a subdomain they provided to access my local server, which is on my computer. I use EasyPHP devserver as my local server.

In order to not continue to rely on No-IP.com’s service, I added an A Record to my own domain name (xxxxxxx.dev) and pointed the newly created subdomain (xxx.xxxxxxx.dev) to my IP address. However, it is not working.

As the time of writing this question, I have tested accessing my local server with my IP address and the subdomain provided by No-IP.com, and both works. It’s just my own subdomain (xxx.xxxxxxx.dev) that isn’t working, and my browser’s error message says it can’t establish a connection to the server at xxx.xxxxxxx.dev.

What am I doing wrong?

Some culprits I’m suspecting are:

• SSL issue. Browsers automatically change the connection to a .dev domain to a secured connection. But my browser’s error message does not seem to suggest a SSL issue.
• Anti-virus software issue. Not sure how to check if it is related. But I don’t see my anti-virus showing any warning.

## Offering finance options at point of sale

Hola to all

I currently run an Instagram page selling premium branded clothing. Customers are asking to spread the cost over a payment plan.

What options do i have?
Anyone know companies offering point of sale finance?
Anyone know any solutions to spread costs over a period of time?

If anyone has anything that could help, please feel free to share!

Thanks for giving it a thought even if you don’t respond

Wes
London, UK

## What is the point of Bestial Mutagen?

The Bestial Mutagen gives you a penalty to AC and Ref, but also unarmed attacks, and an item bonus to these. The bonus to attack is 1 higher than what you could get on a level-apropirate weapon, which is nice, but the damage is really lacking after about level 4, more than offsetting the attack advantage:

• level 4 (4.5 vs 7 damage)
• Bestial Mutagen: 1d8, or 1d6 agile
• Weapon with Striking rune: 2d6 or 2d4 agile
• level 12 (5.5 vs 10.5 damage)
• Bestial Mutagen: 1d10, or 1d8 agile
• Weapon with Striking rune: 3d6 or 3d4 agile

Based on this Mutagenists are better off just using weapons, but Bestial Mutagen is supposed to be their signature ability. As Pathfinder 2 is one of the best balanced games I have ever seen, I am pretty sure I am missing something, but what?

## At which point does growing plants require quintessence

In Mage the Ascension 20th Anniversary edition you need quintessence to create things from nothing. With the life sphere 3 dots (+ prime 2 dots) you can create simple life (including plants) with a point of quintessence (page 516-517 in Mage the Ascension 20th Anniversary Edition core rulebook).

With 2 dots the page 516 states:
`Although he can’t yet transmute them into other states of being, he can cause flowers to bloom or wither, help trees bear fruit, and so on.`
"Help a tree bear fruit" seems to imply that some limited growth also works without spending quintessence.

In the case of simple lifeforms like moss or funghi them blooming would just mean that there is more of it there afterwards since those plants mostly only grow larger.

My question is, at which point of growth would you have to use quintessence to make the plant grow larger if you use a Life 2 dot spell to bloom a patch of moss for example.

Is there precedent for this in a rulebook or is it just based on storyteller discretion?

## Deadlock Detection | Should the node T4 point to T1 and T2?

This example regarding deadlock detection was shown during one of my lectures and I have a doubt about it. The image is shown below.

For deadlock detection mechanism, why does T4 point only to T2 and not T1? Chronologically, T1 requests for the exclusive lock before T4. So shouldn’t T4 point to T1 as well?