How to use top in css

The top property in CSS can move an element vertically relative to the top edge of its parent element. You can use length, percentage, or auto to specify the offset. length is the numerical length, percentage is the percentage offset, and auto is automatically calculated by the browser. top only applies to elements with positioning, the top edge of the element will be affected by the margin box or content box.

The top attribute in CSS

The role of the top attribute

The top property sets the offset of an element relative to the top edge of its parent element. It moves an element vertically up or down.

Using syntax

<code class="css">top: <length> | <percentage> | auto;</code>

Attribute value

• <length>: one A numeric value specifying the offset length, such as "5px" or "1em".
• <percentage>: A numeric value that specifies the offset percentage, such as "5%" or "25%".
• auto: The browser automatically calculates the offset based on the element's parent element and content.

Example

Move an element up 20px:

<code class="css">element {
  top: 20px;
}</code>

Move an element down 50% of the height of its parent element:

<code class="css">element {
  top: 50%;
}</code>

Note

• top property only applies to objects with positioning (such as position: absolute or position: relative)Elements.
• When the top attribute value is auto, the element will be aligned along the top edge of its parent element.
• For block-level elements, the top attribute affects the upper edge of its margin box. For inline elements, it affects the top edge of their content box. The
• top attribute can be used with other attributes such as bottom, left, and right to achieve precise positioning of elements.

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