Immagini nei campi del form.

<style>
.form_1 {
 background: url("https://goo.gl/jZr6sF") no-repeat 10px;
}
.form_2 {
 background: url("https://goo.gl/87Fz8K") no-repeat 10px;
}
input.form_1 {
  padding-left:50px;
}
input.form_2 {
  padding-left:50px;
}
</style>
<div id="form">
<form>
<input type="text" class="form_1" placeholder="Cognome e Nome"> 
<input type="email" class="form_2" placeholder="Email"> 
</form>