To style a circle with two borders that adapts to the container's size, you can utilize the following approach:
<div></div>
<code class="css">div { width: 20em; height: 20em; border-radius: 50%; background-color: red; border: 4px solid #fff; box-shadow: 0 0 0 5px red; }</code>
This structure creates a circle with a solid white border and a red inner border represented by the box-shadow property. The box-shadow effectively creates an illusion of a second border by extending the background color beyond the circle's edge. This approach ensures that the circle's styling remains responsive, adjusting its dimensions and appearance based on the container's size.
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