CSS SYNTAX

A CSS statement consists of a selector and a property: value declaration block:

selector { property: value}

Let explain the terms given in the above statement: 

Selector : 

• The Selector refered to the HTML element which you want to style.

Declaration Block:

• A 'property : value' combination is known as declaration block.
• It can be one or more declaration blocks for the css rule. 
• The Declaration Block consists rule declarations you want to apply on the selector. 
• All these declarations are saperated by semicolons(;).
• All the declarations are consist of a CSS property name and a value which is saperated by colon(:).
• The declarations blocks always appears in the curly brackets {}.
• All the CSS declaration ends with a semicolon(;) every time.

Let understand above terms by example: 

Suppose we want to style all the anchor tags or links or <a> elements in the web page.

So here,
a will be selector, color will be  property and blue will be the value of the property and color: blue will be a declaraion block. Similarly, font-size: 14px will be another declaration block.

---

a {
      color: blue;
      font-size: 14px;

}

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In the above example all the <a> elements means all the links will have color blue and have the font size of 14 pixels.