css - H1 tag and P tag on the same line?

Question

I'm trying to place some text inside the P tag after the closing H1 tag like this:

Headline And here are the text right after....

But I can't get it to work. I made this CSS, but something is perhaps missing?

CSS:

p.start {
    font-family: 'Open Sans', sans-serif;
    font-size: 16px;
    line-height: 28px;
    text-align: justify;
    display: inline;
}

h1.start {
    font-family: 'Open Sans', sans-serif;
    font-size: 16px;
    line-height: 28px;
    margin: 0;
    display: inline-block;
}

HTML:

<div id="containerIntro">
    <h1 class="start">Headline </h1>
    <p class="start">Text......</p>
</div>

Answer 1

So if you had:

<div id="containerIntro">
    <h1>Headline</h1>
    <p>And here the text right after...</p>
</div>

Your CSS would have to look something like this:

#containerIntro h1,
#containerIntro p {
    display: inline;
    vertical-align: top;
    font-family: 'Open Sans', sans-serif;
    font-size: 16px;
    line-height: 28px;
}

See http://jsfiddle.net/F3Bcd/3/.