.was-validated .custom-file-input:valid ~ .custom-file-label, .custom-file-input.is-valid ~ .custom-file-label {
    border-color: #28a745;
  }
  
  .was-validated .custom-file-input:valid:focus ~ .custom-file-label, .custom-file-input.is-valid:focus ~ .custom-file-label {
    border-color: #28a745;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
  }

  .was-validated .custom-file-input:invalid ~ .custom-file-label, .custom-file-input.is-invalid ~ .custom-file-label {
    border-color: #dc3545;
  }
  
  .was-validated .custom-file-input:invalid:focus ~ .custom-file-label, .custom-file-input.is-invalid:focus ~ .custom-file-label {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
  }

  .input-group > .form-control,
.input-group > .form-control-plaintext,
.input-group > .custom-select,
.input-group > .custom-file {
  position: relative;
  -ms-flex: 1 1 auto;
  flex: 1 1 auto;
  width: 1%;
  min-width: 0;
  margin-bottom: 0;
}

.input-group > .form-control + .form-control,
.input-group > .form-control + .custom-select,
.input-group > .form-control + .custom-file,
.input-group > .form-control-plaintext + .form-control,
.input-group > .form-control-plaintext + .custom-select,
.input-group > .form-control-plaintext + .custom-file,
.input-group > .custom-select + .form-control,
.input-group > .custom-select + .custom-select,
.input-group > .custom-select + .custom-file,
.input-group > .custom-file + .form-control,
.input-group > .custom-file + .custom-select,
.input-group > .custom-file + .custom-file {
  margin-left: -1px;
}

.input-group > .form-control:focus,
.input-group > .custom-select:focus,
.input-group > .custom-file .custom-file-input:focus ~ .custom-file-label {
  z-index: 3;
}

.input-group > .custom-file .custom-file-input:focus {
  z-index: 4;
}

.input-group > .custom-file {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-align: center;
    align-items: center;
  }
  
  .input-group > .custom-file:not(:last-child) .custom-file-label,
  .input-group > .custom-file:not(:last-child) .custom-file-label::after {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
  }
  
  .input-group > .custom-file:not(:first-child) .custom-file-label {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
  }
  
  .input-group:not(.has-validation) > .form-control:not(:last-child),
  .input-group:not(.has-validation) > .custom-select:not(:last-child),
  .input-group:not(.has-validation) > .custom-file:not(:last-child) .custom-file-label,
  .input-group:not(.has-validation) > .custom-file:not(:last-child) .custom-file-label::after {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
  }
  
  .input-group.has-validation > .form-control:nth-last-child(n + 3),
  .input-group.has-validation > .custom-select:nth-last-child(n + 3),
  .input-group.has-validation > .custom-file:nth-last-child(n + 3) .custom-file-label,
  .input-group.has-validation > .custom-file:nth-last-child(n + 3) .custom-file-label::after {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
  }

  .custom-file {
    position: relative;
    display: inline-block;
    width: 100%;
    height: calc(1.5em + 0.75rem + 2px);
    margin-bottom: 0;
  }
  
  .custom-file-input {
    position: relative;
    z-index: 2;
    width: 100%;
    height: calc(1.5em + 0.75rem + 2px);
    margin: 0;
    overflow: hidden;
    opacity: 0;
  }
  
  .custom-file-input:focus ~ .custom-file-label {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
  }
  
  .custom-file-input[disabled] ~ .custom-file-label,
  .custom-file-input:disabled ~ .custom-file-label {
    background-color: #e9ecef;
  }
  
  .custom-file-input:lang(en) ~ .custom-file-label::after {
    content: "Browse";
  }
  
  .custom-file-input ~ .custom-file-label[data-browse]::after {
    content: attr(data-browse);
  }
  
  .custom-file-label {
    position: absolute;
    top: 0;
    right: 0;
    left: 0;
    z-index: 1;
    height: calc(1.5em + 0.75rem + 2px);
    padding: 0.375rem 0.75rem;
    overflow: hidden;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
  }
  
  .custom-file-label::after {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 3;
    display: block;
    height: calc(1.5em + 0.75rem);
    padding: 0.375rem 0.75rem;
    line-height: 1.5;
    color: #495057;
    content: "Browse";
    background-color: #e9ecef;
    border-left: inherit;
    border-radius: 0 0.25rem 0.25rem 0;
  }

  .custom-control-label::before,
.custom-file-label,
.custom-select {
  transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

@media (prefers-reduced-motion: reduce) {
  .custom-control-label::before,
  .custom-file-label,
  .custom-select {
    transition: none;
  }
}