public/stylesheets/admin.css
#admin_nav_sources a {
background-image: url(/images/icon_octocat.svg);
}
.composition-fields input {
display: block;
width: 355px;
margin: 0;
float: left;
}
.composition-fields input:first-child {
margin-right: 8px;
}
.composition-fields:after {
content: ' ';
display: block;
clear: both;
}