How do I change the line-height with this code?

<font color="#FFFFFF">
    <span style="float: left; position: relative; top: 25px; left:100px">
        text here&l开发者_Python百科t;br>and more text here....
    </span>
</font>

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Perhaps there's a more imperative style associated with that element somewhere else in the cascade? Load that sucker up in Chrome and inspect the element via Web Developer extension - it will show the computed style on that element, and any overridden styles.

EDIT:

In response to comments:

<p style="line-height:1.2em;">Your text here</p>

That should do it, or adjust the 1.2em upward by small amounts. Remember though, this will only apply the line height style to that specific <p> tag. If you can /need to / want to be consistent, apply that style="line-height:1.2em;" to the paragraph's containing element, like:

<div style="line-height:1.2em;">
    <p>Paragraph 1 will have the same line-height as</p>
    <p>Paragraph 2.</p>
</div>

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This is not true usage. I think the true usage is;

<span><font></font></span>

But you should try this;

<style>
.class1{
height: 100px;
width: 250px;
background-color: #000;
color: #fff;
font: normal 12px Verdana;
line-height: 100px;
}
</style>

<div class="class1">your text message is here...</div>

you can use another way for line-height in font property;

font: normal 12px/100px Verdana;