Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
The CSS ::first-line pseudo-element helps us style first line of an elementThe following examples illustrate CSS ::first-line pseudo-element.Example Live Demo body { text-align: center; background-color: darkorchid; } ::first-line { font-size: 2em; color: black; font-weight: bold; text-shadow: 0 -10px grey; } Donec rutrum a erat vitae interdum. Donec suscipit orci sed arcu cursus imperdiet. Duis consequat aliquet leo, quis aliquam ex vehicula in. Vivamus placerat tincidunt hendrerit. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque semper ex eget nulla consectetur varius. Integer a dolor leo. Donec ... Read More
Using the CSS pointer-events property we can control whether a mouse and touch are allowed on an element.The syntax of CSS pointer-events property is as follows −pointer-events: auto|none;Above, auto is default. Element reacts to pointer events, whereasnone: Element does not react to pointer eventsExampleThe following examples illustrate CSS pointer-events property. Live Demo a { margin: 10vh; pointer-events: none; } a:last-of-type { pointer-events: auto; } No pointer event here Automatic pointer event here OutputThis will produce the following result −Example Live Demo select { margin: 10vh; pointer-events: none; ... Read More
We can store extra information about elements using data-* attribute. The following examples illustrate CSS data-* attribute.Example Live Demo dl { margin: 2%; } p { width: 60%; background-color: lightgreen; padding: 2%; color: white; text-align: center; } dt { font-weight: bold; } dt:hover { cursor: pointer; } dd { font-style: italic; } Tea Hot Spicy Tea or Ice Lemon Tea Toast Hot Garlic Butter Toast (hover over food item) function showDescription(food) { let foodType = food.getAttribute("data-food-type"); document.querySelector('p').textContent = ("We ... Read More
We can create a customized checkmark using CSS. The following examples illustrate this effect −Example Live Demo div { margin: 2%; position: relative; width: 40px; height: 40px; box-shadow: inset 0 0 12px lightblue; } div::before { content: ""; position: absolute; width: 8px; top: 50%; height: 50%; border-radius: 2px; background-color: rgb(123, 45, 20); transform: translateX(12px) rotate(-45deg); transform-origin: left bottom; z-index: +1; } div::after { content: ""; position: absolute; bottom: 0; height: 8px; width: 100%; border-radius: 2px; background-color: rgb(200, ... Read More
To help developers customize their websites with a mix of JavaScript and CSS, new CSS properties have been developed and now support popular browsers. Some of these are listed below −focus-withinIt aims to solve focus-accessibility within elementsscroll-snapThis enables native scroll and deceleration@media(prefers-*)Helps set both UI and UX of page according to device preferences of the user, thereby, allowing higher level of personalization.* can denote light-level, forced-colors, color-scheme, contrast, reduced-motion and reduced-transparencyposition: stickyTo keep UI within the viewport.logical properties for having a standard layoutAllows us to have dynamic directional spacing within and around the elements.gap propertyThis property is now available for ... Read More
In this problem, we are given a binary tree and an integer N. The task is to find the n-th node in Postorder traversal of a Binary Tree.A binary tree has a special condition that each node can have a maximum of two children.Traversal is a process to visit all the nodes of a tree and may print their values too.Let’s take an example to understand the problem, InputN = 6Output3ExplanationPost order traversal of tree − 4, 5, 2, 6, 7, 3, 1Solution ApproachThe idea is to use the post order traversal of the binary tree which is done by ... Read More
In this problem, we are given an integer N, denoting a series of numbers consisting of 4 and 7 only.The series is 4, 7, 44, 47, 74, 77, …The task is to find the n-th element in a series with only 2 digits (and 7) allowed.Let’s take an example to understand the problem, InputN = 4, Output47ExplanationThe series is: 4, 7, 44, 47, ….Solution ApproachA simple solution to the problem is creating the series till Nth number. It’s simple, if the current number’s last digit is 7. Then the last digit of previous and next numbers is 4.So, we will ... Read More
In this problem, we are given three values A, B and N. Our task is to Find n positive integers that satisfy the given equations.Problem Description − We need to find the N positive values that satisfy both the equations, x12 + x22 + … xn2 ≥ A x1 + x2 + … xn ≤ BPrint n values if present, otherwise print -1.Let’s take an example to understand the problem, InputN = 4, A = 65, B = 16Output1 1 1 8ExplanationThe equations are −12 + 12 + 12 + 82 = 1 + 1 + 1 + 64 = ... Read More
In this problem, we are given a string num representing a large integer. Our task is to Find N % (Remainder with 4) for a large value of N.Problem Description − we will be finding the remainder of the number with 4.Let’s take an example to understand the problem, Inputnum = 453425245Output1Solution ApproachA simple solution to the problem is by using the fact that the remainder of the number with 4 can be found using the last two digits of the number. So, for any large number, we can find the remainder by dividing the number’s last two digits by ... Read More
In this problem, we are given a number N. Our task is to Find Multiples of 2 or 3 or 5 less than or equal to N.Problem Description − We will be counting all elements from 1 to N that are divisible by 2 or 3 or 5.Let’s take an example to understand the problem, InputN = 7Output5ExplanationAll the elements from 1 to 7 are : 1, 2, 3, 4, 5, 6, 7. Elements divisible by 2/3/5 are 2, 3, 4, 5, 6Solution ApproachA simple approach to solve the problem is by traversing all numbers from 1 to N and ... Read More