What is preventing me from setting the height of a span to 0 pixels?

It seems that when the height is set to 0px, the element doesn't visually shrink...

<div id="bg">
    <div id="animate"><span>WINNER ALERT! Click here to get a million dollars!!!</span></div>
</div>

#bg {
    background-color:#898989;
    font-family: Helvetica;
    padding:20px;
}

span {
    border:solid black 1px;
    height:0px;
}

#animate {
    height: 0px;
}

http://jsfiddle.net/LgKP3/

Answer №1

The reason for this behavior is that the span element is classified as an inline element. Inline elements do not adhere to height properties; instead, they take on the height of their content.

You can see an example of this concept in action here: http://jsfiddle.net/59xjv/

Even if you try applying a style like height:500px, it won't have any effect on the span due to its inline nature.

However, when you change the span into a block-level element, then the height property will start taking effect.

You can observe this change in behavior by viewing this example: http://jsfiddle.net/59xjv/1/

I hope this explanation clears things up for you!

Answer №3

In order to achieve the desired effect, it is necessary to adjust the display property to inline-block. Additionally, setting overflow to hidden will help to conceal the contents effectively.

span {
    border: solid black 1px;
    height: 0px;
    display: inline-block;
    overflow: hidden;
}

Answer №4

Span is considered an inline element, meaning it does not have a block level element which restricts its ability to have a height. No matter the height specified in the stylesheet for the span, it simply won't take effect. My recommendation would be to opt for a div with an id or class assigned with a height of 0px instead of relying on a span.

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