.modal {
  text-align: center;
  padding: 0!important;
}

.modal:before {
  content: '';
  display: inline-block;
  height: 100%;
  vertical-align: middle;
  margin-right: -4px;
}

.modal-dialog {
  display: inline-block;
  text-align: left;
  vertical-align: middle;
}

/* ALL LOADERS */
.loader{
  width: 100px;
  height: 100px;
  border-radius: 100%;
  position: relative;
  margin: 0 auto;
}

/* LOADER 1 */
#loader-1:before, #loader-1:after{
  content: "";
  position: absolute;
  top: -10px;
  left: -10px;
  width: 100%;
  height: 100%;
  border-radius: 100%;
  border: 10px solid transparent;
  border-top-color: #3498db;
}

#loader-1:before{
  z-index: 100;
  animation: spin 1s infinite;
}

#loader-1:after{
  border: 10px solid #ccc;
}

@keyframes spin{
  0%{
    -webkit-transform: rotate(0deg);
    -ms-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
}

100%{
    -webkit-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    transform: rotate(360deg);
}
}