Layout sizing options

The properties used for setting the size

The size types list includes the properties used for setting the size and can be used as short cut to exclude sizing options.

The default option is to set both the width and height.

By setting the width option the height option is excluded.

By setting the height option the width option is excluded.

For example, if you chose the width option the CSS would look like this:

.MyElement {
    width: 100px;
}

If you chose the height option the CSS would like this:

.MyElement {
    height: 10px;
}

You can also chose the none option to exclude any size properties.

Changing this option to anything but default or both can break your page or element from what it looks like on the artboard.

width - CSS: Cascading Style Sheets | MDN

height - CSS: Cascading Style Sheets | MDN