What is the purpose of em measurement unit?

751

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What is bootstrap breadcrumb?

764

---

What is progressive enhancement?

1371

---

How CSS style overriding works?

1302

---

What is RWD?

779

---

What is the CSS Box model and what are its elements?

680

---

Define Attribute Selector ?

669

---

What is Responsive Web design?

678

---

How can backward compatibility be designed in CSS?

762

---

What is Tweening?

672

---

What is Alternate Style Sheet?

715

---

What is graceful degradation?

647

---

What are the benefits of CSS sprites?

833

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How to select all paragraph elements whose lang attribute contains values that are exactly "en", or begin with "en-"?

716

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Why imported is an easy way to insert the file?

662

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