collapse

问题 so I'm having a hard time understanding the circumstances under which a float can have margins collapse through it and how that affects the position of the float. I've included a page that seems to show two different behaviors in the same page. The red float seems to be positioned before the margins that collapsed through it, whereas the blue ones down below seem to have the margins collapse through them and then be positioned after those margins have collapsed. Any help would be much

问题 so I'm having a hard time understanding the circumstances under which a float can have margins collapse through it and how that affects the position of the float. I've included a page that seems to show two different behaviors in the same page. The red float seems to be positioned before the margins that collapsed through it, whereas the blue ones down below seem to have the margins collapse through them and then be positioned after those margins have collapsed. Any help would be much

问题 There is a list of conversations and every conversation has a list of messages. Every message has different fields and an action field. We need to consider that in the first messages of the conversation there is used the action A , after a few messages there is used action A.1 and after a while A.1.1 and so on (there is a list of chatbot intents). Grouping the messages actions of a conversation will be something like: A > A > A > A.1 > A > A.1 > A.1.1 ... Problem: I need to create a report

问题 There is a list of conversations and every conversation has a list of messages. Every message has different fields and an action field. We need to consider that in the first messages of the conversation there is used the action A , after a few messages there is used action A.1 and after a while A.1.1 and so on (there is a list of chatbot intents). Grouping the messages actions of a conversation will be something like: A > A > A > A.1 > A > A.1 > A.1.1 ... Problem: I need to create a report

问题 I'm in a weird situation with my query. My objective is to display the total deposits and withdrawals from multiple transactions for each person and display them. I am getting multiple rows that I need to collapse into one. This all needs to happen in one query SELECT lastname, firsname, case when upper(category) = 'W' then sum(abs(principal)) end as Withdrawal, case when upper(category) = 'D' then sum(abs(principal)) end as Deposit, description FROM table1 JOIN table2 ON table1.id = table2

问题 This question already has answers here : Margin collapsing in flexbox (2 answers) Closed 2 years ago . 2 element inside a container with display:block margins collapse, but with display:flex is not working ! example .wrapper { width: 50%; margin: 0 auto; } .container { display: flex; // display: block; flex-flow: column nowrap; background-color: green; } h1 { background-color: #777; margin-bottom: 20px; } p { background-color: #ccc; margin-top: 15px; } 回答1: Margins does not collapse when one

问题 I have 2 links that both reveal different divs. I've got it slide toggling all fine. But what i need it to do is collapse the opposite toggle (if it's open). Similar to how an accordion panel works (when you trigger a reveal toggle link the open panel closes and the newly triggered panel opens). Here's the jQuery I'm currently using //Left reveal toggle $(".left-reveal-toggle").on("click", function () { $('.left-reveal-section').slideToggle("slow"); $(".left-reveal-toggle").toggleClass(

问题 I have 2 links that both reveal different divs. I've got it slide toggling all fine. But what i need it to do is collapse the opposite toggle (if it's open). Similar to how an accordion panel works (when you trigger a reveal toggle link the open panel closes and the newly triggered panel opens). Here's the jQuery I'm currently using //Left reveal toggle $(".left-reveal-toggle").on("click", function () { $('.left-reveal-section').slideToggle("slow"); $(".left-reveal-toggle").toggleClass(

问题 I know there are many questions on this topic so I apologize if this is a duplicate question. I'm trying to collapse multiple columns in a data set into one column: Assuming this is the structure of the dataset I am working with, df <- data.frame( cbind( variable_1 = c('Var1', NA, NA,'Var1'), variable_2 = c('Var2', 'No', NA, NA), variable_3 = c(NA, NA, 'Var3', NA), variable_4 = c(NA, 'Var4', NA, NA), variable_5 = c(NA, 'No', 'Var5', NA), variable_6 = c(NA, NA, 'Var6', NA) )) variable_1

问题 Just can't figure out the situation when this clever set of rules can be helpful. They break the simplicity of the box model and provide infinite source of troubles when you combine different pieces of layout together. So what is the reason? Rules for the reference. Update: Rules are quite logical for sibling elements, but why margins should propagate to parent elements up to the tree? What kind of problems that solves? For example: <div style="margin: 20px; background-color: red;"> <div