body 
{
  background: url('https://pbs.twimg.com/media/EN_5kEHXkAUEaY2?format=jpg&name=4096x4096') no-repeat center center fixed;
  -webkit-background-size: cover;
  -moz-background-size: cover;
  background-size: cover;
  -o-background-size: cover;
}
form.dmxDropzone {border-style: dashed;border-radius: 4px;font-size: 1.5em;color: rgb(179, 179, 179);background: #fafafa;}
form.dmxDropzone a, form.dmxDropzone a:hover{color: rgb(179, 179, 179)}
form.dmxDropzone div.dz-preview {margin:5px;}
form.dmxDropzone div.dz-preview div.dz-image, form.dmxDropzone div.dz-preview.dz-file-preview div.dz-image{border-radius: 5px;}
form.dmxDropzone div.dz-preview div.dz-progress {height:12px;margin-top: 30px;border-radius: 4px;}