Html not making a border

I have this style

<div style="width: 285px; float: right; border: 1px;">

I am expecting there to be a bor开发者_如何学Pythonder, but there isn't. Did I do something wrong?

Thanks!

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You seem to be using border-width. Use border:1px solid black instead (or something similar).

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If you check the CSS reference you will see that border requires 3 parameters:

border: [width] [style] [color]

border Definition and Usage

The border shorthand property sets all the border properties in one declaration.

The properties that can be set, are (in order): border-width, border-style, and border-color.

It does not matter if one of the values above are missing, e.g. border:solid #ff0000; is allowed.

See also

• border-width
• border-style
• border-color

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Have to give it a type and a color like border: 1px solid #000

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If you don't specify all three border attributes, then you get default values. For the width this happens to be medium. For the style this is none, which means you get no border, no matter what the width is. I'm not sure that CSS defines a name for the default colour, but Firefox uses the current text colour.