The top property for CSS specifies how far a box's top margin edge is offset below the top edge of the box's containing block.
object.style.top = "value";
<'top'> = auto | <length-percentage>
auto
Automatically specified by the user agent.
<length-percentage> =
<length> |
<percentage>
<length>
Specifies the length using a number followed by a unit of measurement.
<percentage>
Specifies the percentage using a number followed by a percent sign (%).