The CSStext-shadow property is used to apply shadow effects to text and its text-decorations. Multiple shadow effects are applied front-to-back; the first shadow is on top. This property is not supported by Internet Explorer.
Optional, allowed before or after the <length> values. If <color> is not specified, a user agent-chosen color will be used. Gecko uses the value of the element's color property. Other browsers may differ. Valid color names or color codes are accepted.
Required. These <length> values set the shadow offset. <offset-x> specifies the horizontal distance. Negative values place the shadow to the left of the text. <offset-y> specifies the vertical distance. Negative values place the shadow above the text. If both values are 0, the shadow is placed behind the text (and may generate a blur effect when <blur-radius> is set). Examples of lengths are px, em, etc.
Optional. This is a <length> value. If not specified, it will be 0. The higher this value, the bigger the blur, so the shadow becomes wider and lighter.