<style>.info-box {
background: #EBF6FF;
border: 1px solid #AAD9F5;
border-radius: 3px 3px 3px 3px;
padding: 5px;
}</style>
<div class="info-box">asd</div>
This should work out as you wanted:
PHP:<style>.info-box { background: #EBF6FF; border: 1px solid #AAD9F5; border-radius: 3px 3px 3px 3px; padding: 5px; }</style> <div class="info-box" id="info-box">asd</div>
<style>.info-box {
background: #EBF6FF;
border: 1px solid #AAD9F5;
border-radius: 3px 3px 3px 3px;
padding: 5px;
}</style>
<div class="info-box" id="info-box">asd
<input style="float: right; margin-right: 20px; align-text: right;"
type="button" value="close"
onclick="document.getElementById('info-box').style.visibility = 'hidden';"></div>