<form action="/target" class="dropzone mb-2" id="myDropzone1">
                <div class="dz-default dz-message my-2">
                    <i class="h1 bi bi-cloud-upload"></i><br>
                    <button class="dz-button" type="button">Drag and Drop or Click here to
                    upload</button>
                </div>
            </form>
            
            <p class="text-secondary small">Upload only .jpeg, .png, .mp4, .mpeg4 file format max. file size 6MB</p>
            
            <script>
                Dropzone.options.myGreatDropzone = { // camelized version of the `id`
                    paramName: "file", // The name that will be used to transfer the file
                    maxFilesize: 2, // MB
                    accept: function(file, done) {
                        if (
                            file.name == "justinbieber.jpg") {done("Naha, you don't.");
                        }else { 
                            done(); 
                        }
                    }
                };
            </script>