Box-shadow in css in shadow-sm/lg/md in Tailwind css

 Perfect 👍 let’s fully explain this version of the box-shadow:

box-shadow: 10px 10px 20px 5px rgba(0,0,0,0.3);

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🧩 General Syntax

box-shadow: offset-x offset-y blur-radius spread-radius color;

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🔍 Breakdown of your values:

Value	Part	Meaning
10px	offset-x	Moves the shadow 10px to the right.
10px	offset-y	Moves the shadow 10px downward.
20px	blur-radius	Makes the shadow soft and blurry — larger number = more blur.
5px	spread-radius	Expands the size of the shadow outward by 5px (makes it thicker/wider).
rgba(0,0,0,0.3)	color	A semi-transparent black shadow (opacity 0.3 = 30% visible).

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🧠 Visualization:

If you have a box like this:

<div class="card">Box</div>

And the CSS:

.card {
  width: 150px;
  height: 100px;
  background: white;
  box-shadow: 10px 10px 20px 5px rgba(0,0,0,0.3);
}

✅ The result will look like:

• A white box

• Shadow slightly to the bottom-right (10px each way)

• Softly blurred (20px) and spread outward (5px)

• With a grayish look because of the semi-transparent black

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🎨 Quick tip:

If you want a softer, lifted card look, try:

box-shadow: 0 4px 10px rgba(0,0,0,0.2);

If you want a stronger, dramatic effect, try:

box-shadow: 10px 10px 30px rgba(0,0,0,0.5);

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