.card-header#headingOne h2.mb-0 {
  text-align-last:justify
}

.card-header#headingOne h2.mb-0 {
  display:flex;
  justify-content:space-between;
}

h2.mb-0 {
 display: flex;
 justify-content: space-between;
 align-items: center;
}

.modificationUtilisateur{
  float: right;
  margin-top:15px
 }