.dropzone1 {
    background: white;
    border-radius: 5px;
    border: 2px solid #333;
    border-image: none;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    font-size: 26px;

    padding: 100px 0;
}

.dropzone1 p {
  font-size: 26px;
}

#actions {
    margin-top: 30px;
}

.loader {
  border: 3px solid #f3f3f3; /* Light grey */
  border-top: 3px solid #3498db; /* Blue */
  border-radius: 50%;
  width: 20px;
  height: 20px;
  animation: spin 2s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.btn-loading .loader{
  display: none;
}

.btn-loading.loading {
  display: flex;
  align-items: center;
}

.btn-loading.loading .loader {
  display: inline-block;
  margin-left: 5px;
}

#csv_columns_desc p {
  margin-bottom: 0px;
}

#csv_columns_desc span {
  text-transform: uppercase;
}