/* styles de base si JS est activé */
.input-file-container {
  position: relative;
  margin-top:12px;
  width: 47px;
  height: 55px;
}
.input-file-trigger {
  display: block;
  padding: 10px 10px;
  background: #39D2B4;
  color: #777;
  font-size: 0.7em;
  transition: all .4s;
  cursor: pointer;
}
.input-file {
  position: absolute;
  top: 0; left: 0;
  width: 50px;
  padding: 14px 0;
  opacity: 0;
  cursor: pointer;
}
 
/* quelques styles d'interactions */
.input-file:hover + .input-file-trigger,
.input-file:focus + .input-file-trigger,
.input-file-trigger:hover,
.input-file-trigger:focus {
  color: #777;
}
 
/* styles du retour visuel */
.file-return {
  margin: 0;
}
.file-return:not(:empty) {
  margin: 1em 0;
}
.file-return {
  font-style: italic;
  font-size: .6em;
  font-weight: bold;
}
/* on complète l'information d'un contenu textuel
   uniquement lorsque le paragraphe n'est pas vide */
.file-return:not(:empty):before {
  content: "Selected file: ";
  font-style: normal;
  font-weight: normal;
}