Left edge of element

left

Explicitly set the left edge of the element.

Property values

This property has different interpretations, depending upon the element's position property.

position interpretation
static This property is ignored.
relative Shifts the normal flow-of-text position by the given amount. Positive values shift it inside the element's left boundary. Negative values shift it outside the element's left boundary.
fixed Sets the left edge of the element to be the given amount inside the left edge of the browser's viewport.
absolute Sets the left edge of the element to be the given amount inside the left edge of the ancestor's viewport, but only if that ancestor has a position that is relative, fixed or absolute.
sticky Follows the rules for relative until the left value is scrolled to. After that, follows the rules for fixed and uses the given value as a fixed amount from the browser's left edge.

Units

Use any of these font-relative typographic units to set the left:

em em The font-size of the current font
rem relative em The font-size of the <html> element
ch "0" The advance measure (the width) of the current font's "0" glyph
ic ideograph count The advance measure (the width) of the current font's "水" ideograph

Or use any of these fixed size units which are independent of the current font:

% percent A percentage of the parent element's width
in inch A size equal 96px
px pixels A size equal to 1/96 inch
pt point A size equal 1in/72 = 1.33px
pc pica A size equal 1in/6 = 12pt = 16px
cm centimeter A size equal to 96px/2.54 = 37.8px
mm millimeter A size equal to 96px/25.4 = 3.8px
Q quarter millimeter A size equal to 96px/1016 = 0.94px

Examples

/* shift the element 2rem to the right of its normal flow-of-text position */
position: relative;
left: 2rem;

/* position the element 2rem inside the browser's left edge */
position: fixed;
left: 2rem;

/* position the element 2rem inside its ancestor's left edge */
position: absolute;
left: 2rem;
left

style > position > leftLeft edge of element

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