Why Isn't My CSS Border-Color Working?

Border-Color Not Working in CSS: A Comprehensive Answer

When working with CSS, encountering issues like border-color not functioning can be frustrating. This article will delve into the causes and provide a detailed solution to resolve this problem.

In the provided fiddle, the code:

<div>
<p>is intended to create a div with a red border. However, it fails to do so due to the absence of border-width and border-style properties. By default, these properties are set to 0 and none, respectively.</p>
<p>To make the border visible and red, you need to specify the following:</p>
<pre class="brush:php;toolbar:false">#box {
    border: 1px solid red;
}

This combines all the necessary border properties into a single line:

1. border-width: 1px: Sets the width of the border to 1 pixel.
2. border-style: solid: Sets the style of the border to solid.
3. border-color: red: Sets the color of the border to red.

Once these properties are added, the div's border will become 1 pixel wide, solid, and colored red as intended. It's important to remember that the border-color property only determines the color of the border and requires the border or border-width properties to specify the actual border.