CSS Properties: How to set border-top-color is animatable?

Last update on February 19 2024 13:02:58 (UTC/GMT +8 hours)

Solution:

HTML Code:

<!DOCTYPE html><!-- Declares the document type as HTML -->
<html><!-- Root element of the HTML document -->
<head><!-- Contains metadata about the HTML document -->
<title>How to set border-top-color is animatable</title><!-- Sets the title of the HTML document -->
<style type="text/css"> /* Begins a CSS style block */
#mydiv { /* Defines a CSS rule for an element with the id "mydiv" */
width: 200px; /* Sets the width of the element to 200 pixels */
height: 150px; /* Sets the height of the element to 150 pixels */
border: 15px solid #CC63FF; /* Sets the border of the element to 15 pixels solid with the color #CC63FF */
-webkit-animation: mymove 5s infinite; /* Applies a webkit animation named "mymove" with a duration of 5 seconds and infinite iterations */
animation: mymove 5s infinite; /* Applies an animation named "mymove" with a duration of 5 seconds and infinite iterations */
}
@keyframes mymove { /* Defines a keyframe animation named "mymove" */
50% {border-top-color: #22CF64;} /* Specifies the border-top-color property to change to #22CF64 at the 50% keyframe */
}
</style><!-- Ends the CSS style block -->
</head><!-- Ends the head section of the HTML document -->
<body><!-- Contains the content of the HTML document -->
<div id="mydiv">w3resource Tutorial</div><!-- Displays the text 'w3resource Tutorial' within a div element with the id "mydiv" -->
</body><!-- Ends the body section of the HTML document -->
</html><!-- Ends the HTML document -->

Explanation:

The HTML document structure includes essential elements such as html, head, title, style, and body.
A CSS rule is defined for an element with the id "mydiv", specifying its width, height, and border properties.
An animation named "mymove" is applied to the element, which changes the color of the top border to #22CF64 at the 50% keyframe.
The text "w3resource Tutorial" is displayed within a div element with the id "mydiv".
No comments were added below the code line as requested.

Live Demo:

See the Pen border-top-color-animatable-answer by w3resource (@w3resource) on CodePen.

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