<form role="search" action="https://www.vccpanda.com/" method="get">
                            <input name="s"  type="text" value="" placeholder="Job title, keyworks..."/>
                           <select name="post_type" id="roles">
                              <option value="employers" >Employers</option>
                              <option value="freelancers" >Freelancers</option>
                            </select> 
                    <button type="submit">
                    Search
                    </button>
                </form>