HTML

• The head element contains information about the webpage
• The body element represents the visible content shown to the user
• The head element contains the title element that holds the title of the website
• In the body element you can include header, main and footer elements that helps to organize your page
• In the body element we mainly use semantic elements that clearly defines their content

CSS

• A margin indicates how much space we want the outside of an element
• A padding indicates how much space we want around the content inside an element
• The border indicates the style, width and color of an element's border
• A selector defines the elements or attributes to which the rules, or declarations, will apply
• Declarations contain two important components: the CSS property we want to apply and the value of the property

Git

• git status: checks what branch we are currently on
• git checkout -b branch-name: creates a new branch and switches to it
• git add -A: adds modifications in the current working branch to the staging area
• git commit -m "commit message": captures a snapshot of the curerntly staged changes
• git pull origin main: check if our local branch is in sync with the base branch in GitHub
• git push origin remote branch's name: pushes the changes that we have done on the local branch to the remote branch

JavaScript

• A variable is a named container that allows us to store data in our code.
• Control flow is the order under which a computer executes code in a script.
• An if statement is a conditional statement that will only execute if the statement meets a condition, or is true.
• An array is a single variable that is used to hold a group of data.
• A for loop uses the predictable pattern of indices to perform a task on all the items in an array by allowing a single code block to be executed over and over.