The input not working is due to the below CSS coming from your template.
Code:
select, textarea, input[type="text"], input[type="password"], input[type="datetime"], input[type="datetime-local"], input[type="date"], input[type="month"], input[type="time"], input[type="week"], input[type="number"], input[type="email"], input[type="url"], input[type="search"], input[type="tel"], input[type="color"], .uneditable-input {
color: #646464;
font-size: 100%;
}
Specifically font-size: 100%;. As the source is compiled I don't know where it's originally coming from, sorry.