Fixed.
Open Index.css in search;
Find:
#guest_form .input_text, #guest_form .input_password, #guest_form select, #guest_form .button_submit
{
margin: 0;
font-weight: bold;
color: #fff2cf;
background: #7f6b57 url(../images/theme/menu_gfx.png) -5px -120px no-repeat;
border: 1px solid #6f5c45;
border-radius: 0.25em;
font-size: 1.1em;
padding: 2px 4px;
vertical-align: top;
}
Replace:
#guest_form .input_text, #guest_form .input_password, #guest_form select, #guest_form .button_submit
{
margin: 0;
font-weight: bold;
color: #fff2cf;
background: #7f6b57 url(../images/theme/menu_gfx.png) -50px -120px no-repeat;
border: 1px solid #6f5c45;
border-radius: 0.25em;
font-size: 1.1em;
padding: 2px 4px;
vertical-align: top;
}