.osm-singup-page, .osm-container {
    text-align: left;
    padding: 10px 20%;
}
.osm-container h1, .osm-container h2 {
    width: 90%;
    margin: 5px 0 5px 0;
    padding: 0;
    float: none;
    font-size: 22px;
}
.form form-horizontal {
  width: 70%; 
}
.os-form {width: 70%; }