.box {
    position: relative;
    background: #ffffff;
    width: 100%;
  }

  .box-header {
    color: #444;
    display: block;
    padding: 10px;
    position: relative;
    border-bottom: 1px solid #f4f4f4;
    margin-bottom: 10px;
  }

  .box-tools {
    position: absolute;
    right: 10px;
    top: 5px;
  }

  .dropzone-wrapper {
    border: 2px dashed #91b0b3;
    color: #92b0b3;
    position: relative;
    height: 150px;
  }

  .dropzone-desc {
    position: absolute;
    margin: 0 auto;
    left: 0;
    right: 0;
    text-align: center;
    width: 40%;
    top: 50px;
    font-size: 16px;
  }

  .dropzone,
  .dropzone:focus {
    position: absolute;
    outline: none !important;
    width: 100%;
    height: 150px;
    cursor: pointer;
    opacity: 0;
  }

  .dropzone-wrapper:hover,
  .dropzone-wrapper.dragover {
    background: #ecf0f5;
  }

  .preview-zone {
    text-align: center;
  }

  .preview-zone .box {
    box-shadow: none;
    border-radius: 0;
    margin-bottom: 0;
  }

  .btn-primary {
    background-color: crimson;
    border: 1px solid #212121;
  }

  .dropzone-wrapper.is-invalid{
    border: 2px dashed #dc3545;
  }

  .no-vacio {
    font-size:16px;
    color:#fa424a!important;
  }