How Can I Create Box Shadows Only on the Left and Right Sides of an Element?

Box-Shadow Customization: Achieving Shadows Exclusively on Left and Right Sides

In an attempt to enhance the visual appeal of elements, you aim to incorporate box shadows that appear solely on the left and right sides. However, your current implementation resulted in shadows appearing on all sides. To address this challenge, let's explore a solution using multiple box-shadows.

First, let's focus on achieving shadows on the desired sides. By adjusting the values within the property, you can set the horizontal and vertical offsets. Observe the following code:

box-shadow: 12px 0 15px -4px rgba(31, 73, 125, 0.8), -12px 0 8px -4px rgba(31, 73, 125, 0.8);

In this example, the first box-shadow creates a shadow 12 pixels from the left edge and 15 pixels below it, extending to the right. The second box-shadow simulates the shadow on the right side.

However, you might notice a slight gap in the shadow due to the lack of shadows on the top and bottom edges. To remedy this, additional box-shadows are needed:

box-shadow: 0 9px 0px 0px white, 0 -9px 0px 0px white, 12px 0 15px -4px rgba(31, 73, 125, 0.8), -12px 0 15px -4px rgba(31, 73, 125, 0.8);

These extra shadows introduce masking by creating a white "border" around the element. This effectively conceals the gaps, resulting in a clean horizontal shadow.

Remember, this technique may not be perfect, and you might encounter some minor imperfections. However, it offers a practical approach to achieving shadows exclusively on the left and right sides, enhancing the aesthetic appeal of your elements.

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