<div class="abcd"  style="margin-left:10px;">
    <form id='some'....>
        <legend>Select Item type :</legend>
        <fieldset style="display:block;float:left;">
            <input class="yy" id="sss" type="radio" name="group0" value="aaa"/> ABC
            ...
        </fieldset>
        <p>
            <input placeholder="Enter Name/Value" name="xxx" id="xxx" size="40" style="display:block;float:left;">
            <button type="button" id="xxx" style="width:100;">Process</button>
        </p>
    </form>
</div>

<div class="abcd"  style="margin-left:10px;">
    <form id='some'>
        <fieldset style="display:block;float:left;">
            <input class="yy" id="sss" type="radio" name="group0" value="aaa"/> ABC

            <input class="yy" id="sss" type="radio" name="group0" value="aaa"/> ABC

            <input class="yy" id="sss" type="radio" name="group0" value="aaa"/> ABC

        </fieldset>
        <p style="clear:both">
            <input placeholder="Enter Name/Value" name="xxx" id="xxx" size="40" style="display:block;float:left;">
            <button type="button" id="xxx" style="width:100;">Process</button>
        </p>
    </form>
</div>

<input placeholder="Enter Name/Value" name="xxx" id="xxx" size="40" style="clear:both;display:block;">

<div style="clear:both"></div>

<style type="text/css">
.group0
{
    display:block;
}
</style>