javascript - Dashed border animation in css3 animation

Javascript - Dashed border animation in css3 animation

Creating a dashed border animation using CSS3 animations involves defining keyframes that alternate between showing and hiding portions of the border. Here's a step-by-step guide on how to achieve this effect:

HTML Structure

First, set up a basic HTML structure with an element to apply the dashed border animation:

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Dashed Border Animation</title> <link rel="stylesheet" href="styles.css"> </head> <body> <div class="box"></div> </body> </html>

CSS Styles (styles.css)

Define the CSS styles for the animation and the element:

body { display: flex; justify-content: center; align-items: center; height: 100vh; margin: 0; background-color: #f0f0f0; } .box { width: 200px; height: 200px; border: 2px dashed transparent; /* Initial transparent dashed border */ animation: dash 2s linear infinite; /* Apply animation */ } @keyframes dash { to { border-color: black; /* Color of the dashed border */ border-width: 2px; /* Width of the dashed border */ border-style: dashed; } }

Explanation

  1. HTML Structure: Only a <div> with class box is used to demonstrate the animation.

  2. CSS Styles:

    • body: Centers the box in the viewport.
    • .box: Specifies the dimensions and initial properties of the box.
    • border: Starts with a transparent dashed border.
    • animation: Applies the dash animation to the box element, which lasts for 2 seconds and repeats infinitely (infinite).

  3. Keyframes (@keyframes dash):

    • to: Defines the end state of the animation where the border color is set to black, border width is set to 2px, and the border style is set to dashed.

Customization

  • Adjust the duration (2s in animation) to change the speed of the animation.
  • Modify the border-color, border-width, and border-style properties in the to keyframe to customize the appearance of the dashed border.

This setup provides a basic example of how to create a simple dashed border animation using CSS3 animations. Adjust the styles and animation duration to suit your specific design requirements.

Examples

  1. CSS3 dashed border animation example

    • Description: Create a dashed border animation effect using CSS3 for a specified HTML element.
    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Dashed Border Animation</title> <style> .dashed-border { border: 2px dashed transparent; animation: dash 2s infinite linear; } @keyframes dash { to { border-color: #ffcc00; /* Change to desired color */ background-size: 100% 2px, 100% 2px, 2px 100%, 2px 100%; background-position: 0 0, 0 100%, 0 0, 100% 0; background-repeat: no-repeat; } } </style> </head> <body> <div class="dashed-border">Dashed Border Animation</div> </body> </html>

    This code snippet uses CSS3 animations (@keyframes) to create a dashed border animation effect on a <div> element.

  2. CSS3 animated dashed line border

    • Description: Implement an animated dashed line border using CSS3 for an HTML element.
    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Animated Dashed Line Border</title> <style> .animated-border { width: 200px; height: 100px; border: 2px dashed transparent; animation: dash 2s infinite linear; } @keyframes dash { to { border-color: #00bfff; /* Change to desired color */ } } </style> </head> <body> <div class="animated-border"></div> </body> </html>

    This example demonstrates how to animate a dashed line border using CSS3 animations, adjusting the color and duration as needed.

  3. CSS3 dashed border animation on hover

    • Description: Create a dashed border animation effect that triggers on hover using CSS3.
    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Dashed Border Animation on Hover</title> <style> .hover-effect { width: 150px; height: 80px; border: 2px dashed transparent; transition: border-color 0.3s ease-in-out; } .hover-effect:hover { border-color: #ff6347; /* Change to desired hover color */ animation: dash 1s infinite linear; } @keyframes dash { to { border-color: #ff6347; /* Change to desired animation color */ } } </style> </head> <body> <div class="hover-effect"></div> </body> </html>

    This code snippet adds a dashed border animation effect that starts on hover using CSS3 transitions and animations.

  4. CSS3 dashed border animation on click

    • Description: Implement a dashed border animation effect that activates on click using CSS3.
    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Dashed Border Animation on Click</title> <style> .click-effect { width: 180px; height: 100px; border: 2px dashed transparent; cursor: pointer; transition: border-color 0.3s ease-in-out; } .click-effect:active { border-color: #32cd32; /* Change to desired active color */ animation: dash 1s infinite linear; } @keyframes dash { to { border-color: #32cd32; /* Change to desired animation color */ } } </style> </head> <body> <div class="click-effect"></div> </body> </html>

    This example showcases a dashed border animation effect triggered on click using CSS3 transitions and animations.

  5. CSS3 dashed border animation with multiple colors

    • Description: Create a dashed border animation effect with alternating colors using CSS3 animations.
    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Multi-color Dashed Border Animation</title> <style> .multi-color { width: 250px; height: 120px; border: 2px dashed transparent; animation: dash 3s infinite linear; } @keyframes dash { 0% { border-color: #1e90ff; /* Start color */ } 50% { border-color: #ff6347; /* Middle color */ } 100% { border-color: #98fb98; /* End color */ } } </style> </head> <body> <div class="multi-color"></div> </body> </html>

    This code snippet uses CSS3 animations (@keyframes) to create a dashed border animation with multiple colors.

  6. CSS3 dashed border animation with gradient effect

    • Description: Implement a dashed border animation effect with a gradient-like transition using CSS3.
    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Gradient Dashed Border Animation</title> <style> .gradient-effect { width: 200px; height: 100px; border: 2px dashed transparent; background: linear-gradient(to right, #ff6347, #1e90ff, #98fb98); /* Gradient colors */ background-size: 200% 100%; animation: dash 2s infinite linear; } @keyframes dash { to { background-position: -200% 0; } } </style> </head> <body> <div class="gradient-effect"></div> </body> </html>

    This example creates a dashed border animation effect with a gradient transition using CSS3 linear-gradient and animations.

  7. CSS3 dashed border animation with different dash sizes

    • Description: Create a dashed border animation effect with varying dash sizes using CSS3 animations.
    <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Different Dash Size Border Animation</title> <style> .dash-size { width: 250px; height: 120px; border: 4px dashed transparent; animation: dash 3s infinite linear; } @keyframes dash { 0% { border-width: 4px; } 50% { border-width: 8px; /* Change to desired larger dash size */ } 100% { border-width: 2px; /* Change to desired smaller dash size */ } } </style> </head> <body> <div class="dash-size"></div> </body> </html>

    This code snippet animates a dashed border with varying dash sizes using CSS3 animations (@keyframes).

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