dy
==

The **`dy`** attribute indicates a shift along the y-axis on the position of an element or its content.

You can use this attribute with the following SVG elements:

* `<feDropShadow>`
* `<feOffset>`
* `<glyphRef>`
* `<text>`
* `<tref>`
* `<tspan>`
Example
-------
```

html,
body,
svg {
  height: 100%;
}
```



```html
<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
  <!-- Lines materialized the position of the glyphs -->
  <line x1="10%" x2="10%" y1="0" y2="100%" />
  <line x1="0" x2="100%" y1="30%" y2="30%" />
  <line x1="0" x2="100%" y1="80%" y2="80%" />

  <!-- Some reference text -->
  <text x="10%" y="30%" fill="grey">SVG</text>

  <!-- The same text with a shift along the y-axis -->
  <text dy="50%" x="10%" y="30%">SVG</text>
</svg>
```



```css
line {
  stroke: red;
  stroke-width: 0.5px;
  stroke-dasharray: 3px;
}
```

feDropShadow
------------

For `<feDropShadow>`, `dy` defines the y offset of the dropped shadow. The unit used to resolve the value of the attribute is set by the `primitiveUnits` attribute of the `<filter>` element.

|  |  |
| --- | --- |
| Value | **<number>** |
| Default value | `2` |
| Animatable | Yes |

feOffset
--------

For `<feOffset>`, `dy` defines the y offset of the filter input graphic. The unit used to resolve the value of the attribute is set by the `primitiveUnits` attribute of the `<filter>` element.

|  |  |
| --- | --- |
| Value | **<number>** |
| Default value | `0` |
| Animatable | Yes |

glyphRef
--------

**Warning:** As of SVG2 `<glyphRef>` is deprecated and shouldn't be used.

For `<glyphRef>`, `dy` defines the y offset of the glyph, in the font metric system.

|  |  |
| --- | --- |
| Value | **<number>** |
| Default value | `0` |
| Animatable | Yes |

text
----

For `<text>`, if it contains a single value, `dy` defines a shift along the y-axis for all glyphs.

If there are multiple values, `dy` defines a shift along the y-axis for each individual glyph relative to the preceding glyph. If there are less values than glyphs, the remaining glyphs use a value of `0`. If there are more values than glyphs, extra values are ignored.

|  |  |
| --- | --- |
| Value | 
 List of
 **<length>** |
| Default value | *none* |
| Animatable | Yes |

### Example
```

html,
body,
svg {
  height: 100%;
}
```



```html
<svg viewBox="0 0 150 100" xmlns="http://www.w3.org/2000/svg">
  <!-- Horizontal lines -->
  <line x1="0" x2="100%" y1="30" y2="30" />
  <line x1="0" x2="100%" y1="40" y2="40" />
  <line x1="0" x2="100%" y1="50" y2="50" />
  <line x1="0" x2="100%" y1="60" y2="60" />

  <!-- Vertical lines -->
  <line x1="10" x2="10" y1="0" y2="100%" />
  <line x1="50" x2="50" y1="0" y2="100%" />
  <line x1="90" x2="90" y1="0" y2="100%" />

  <!-- Behaviors change based on the number of values in the attributes -->
  <text dy="20" x="10" y="30">SVG</text>
  <text dy="0 10" x="50" y="30">SVG</text>
  <text dy="0 10 20" x="90" y="30">SVG</text>
</svg>
```



```css
line {
  stroke: red;
  stroke-width: 0.5px;
  stroke-dasharray: 3px;
}
```

tref
----

**Warning:** As of SVG2 `<tref>` is deprecated and shouldn't be used.

For `<tref>`, if it contains a single value, `dy` defines a shift along the y-axis for all glyphs.

If there are multiple values, `dy` defines a shift along the y-axis for each individual glyph relative to the preceding glyph. If there are less values than glyphs, the remaining glyphs use a value of `0`. If there are more values than glyphs, extra values are ignored.

|  |  |
| --- | --- |
| Value | 
 List of
 **<length>** |
| Default value | *none* |
| Animatable | Yes |

tspan
-----

For `<tspan>`, if it contains a single value, `dy` defines a shift along the y-axis for all alternate glyph.

If there are multiple values, `dy` defines a shift along the y-axis for each individual glyph relative to the preceding glyph. If there are less values than glyphs, the remaining glyphs use a value of `0`. If there are more values than glyphs, extra values are ignored.

|  |  |
| --- | --- |
| Value | 
 List of
 **<length>** |
| Default value | *none* |
| Animatable | Yes |

Specifications
--------------

| Specification |
| --- |
| Filter Effects Module Level 1 # element-attrdef-fedropshadow-dy |
| Filter Effects Module Level 1 # element-attrdef-feoffset-dy |
| Scalable Vector Graphics (SVG) 2 # TextElementDYAttribute |