Why is my input bumping to the next line after the first one?
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I have been playing with this trying to get a layout i like for this form.. and i thought i had something i liked, but after the first row of input the formatting gets messed up and im not sure what im doing wrong..

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
    <html xmlns="http://www.w3.org/1999/xhtml">
    <head>
    <title>Add Company</title>
    <style>
		/* Style for add_client form */
		fieldset#add_field {
			width:830px;
		}
		
		fieldset#Basic_Info, fieldset#Address {
			width: 46%;
			float:left;
		}
		
		fieldset lebel {
			float: left;
			width: 45%;
		}
		
		fieldset label, label span { 
			display: block; 
			padding-bottom: .25em;
		}
		
		fieldset#add_field span {
			float: left;
			text-align: right;
			width: 44%;
		}
		
		fieldset#add_field input {
			float: right;
			width: 44%;
			border-width: 1px;
			border-style: solid;
		}
		
		fieldset#add_field select {
			float: right;
			width: 45%;
		}
	</style>
    </head>
    <body>
    <div id='content'>
		<fieldset id='add_field'>
			<legend>Add Company</legend>
            
            <fieldset id='Basic_Info'>
            	<legend>Basic Info</legend>
                
                <label for="name"><span>Company Name</span><input id="name" /></label>
                <label for="phone"><span>Phone Number</span><input id="phone" /></label>
                <label for="status"><span>Status</span>
                    <select id='status'>
                        <option>1. Lead</option>
                        <option>2. Initial Contact</option>
                        <option>3. Negotiation</option>
                        <option>4. Client</option>
                        <option>5. Previous Client</option>
                    </select>
                </label>
            </fieldset>
            
            <fieldset id='Address'>
            	<legend>Address</legend>
                
                <label for="county"><span>Street Address</span><input id="county" /></label>
                <label for="city"><span>City</span><input id="city" /></label>
            </fieldset>
   
		</fieldset> 
        <input style='margin-top: 20px;' type="submit" value="Submit" id='jqxSubmitButton' />
    </div>
    </body>
    </html>