Orchard/src/Orchard.Web/Modules/Orchard.Themes/Styles/orchard-themes-admin.css

#main .templates p {
    margin:0 0 .3em 0;
}
.templates li {
    margin:.8em;
    width:30%;
    display: -moz-inline-stack;
    display:inline-block;
    vertical-align:top;
    zoom:1;
    *display: inline;
}
.templates p {
    overflow:hidden;
}
.templates img, .themePreviewImage {
    border:1px solid #e8e8e8;
    height:200px;
    margin:.27em 0 .93em 0;
    display:block;
}
.previewImage {
    border:1px solid #525e50;
    height:50%;
    width:50%;
}
.themes #main h2 {
    margin:1em 0 0 0;
}
.themePreviewImage {
    height:300px;
}