How to Customize ≪Input Type="File"≫

label {   cursor: pointer;   /* Style as you please, it will become the visible UI component. */}
#upload-photo {   opacity: 0;   position: absolute;   z-index: -1;}

<label for="upload-photo">Browse...</label><input type="file" name="photo" id="upload-photo" />

Styling an input type=file button

Styling file inputs are notoriously difficult, as most browsers will not change the appearance from either CSS or javascript.

Even the size of the input will not respond to the likes of:

<input type="file" style="width:200px">

Instead, you will need to use the size attribute:

<input type="file" size="60" />

For any styling more sophisticated than that (e.g. changing the look of the browse button) you will need to look at the tricksy approach of overlaying a styled button and input box on top of the native file input. The article already mentioned by rm at www.quirksmode.org/dom/inputfile.html is the best one I've seen.

UPDATE

Although it's difficult to style an <input> tag directly, this is easily possible with the help of a <label> tag. See answer below from @JoshCrozier: https://stackoverflow.com/a/25825731/10128619

Change default text in input type=file?

Each browser has it's own rendition of the control and as such you can't change either the text or the orientation of the control.

There are some "kind of" hacks you may want to try if you want an html/css solution rather than a Flash or silverlightsolution.

http://www.quirksmode.org/dom/inputfile.html

http://www.shauninman.com/archive/2007/09/10/styling_file_inputs_with_css_and_the_dom

Personally, because most users stick to their browser of choice, and therefore are probably used to seeing the control in the default rendition, they'd probably get confused if they saw something different (depending on the types of users you're dealing with).

Styling of the input type file not working

We cannot do much customization of the file input. But you have options like below.

Note: I have used Bootstrap for some classes as your code is using it. But if you want you can have custom classes as well.

One disadvantage is that the select file information is also hidden. If you want that you can get that using JavaScript and show below the button.

input[type='file'] {
  width: 0;
  height: 0;
  overflow: hidden;
  opacity: 0;
}

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<label>
  <input id="Image" type="file" class="form-control-image"         name="image_reference">
  <span class="btn btn-primary">File button</span>
</label>
<br />
<br />
<button class="btn btn-primary form-control-image">Submit</button>

const inputFile = document.querySelector('.my-file'),  label = document.querySelector('.custom-input'),  icon = label.querySelector('.label-icon'),  text = label.querySelector('.label-text');inputFile.addEventListener('change', () => {  text.textContent = 'Please, choose a file.';  if (inputFile.files.length === 1) {    text.textContent = inputFile.files[0].name.toUpperCase();    text.classList.add('attached');    icon.classList.add('attached');  } else {    text.classList.remove('attached');    icon.classList.remove('attached');  }});

.container {  padding: 12px 6px;  background-color: #f6f6f6;}
.wrapper {  display: flex;  justify-content: flex-start;  align-items: stretch;  border: 1px solid #dedede;  border-radius: 6px;  overflow: hidden;}
.wrapper .my-file {  display: none;}
.wrapper .custom-input {  background-color: #fff;  flex: 1;  cursor: pointer;}
.wrapper .custom-input .label-icon {  display: inline-block;  padding: 15px;  background-color: #fde4af;  color: #181818;  transition: all .4s 0s ease;}
.wrapper .custom-input .label-icon.attached {  background-color: #e6ac2d;  color: #fff;}
.wrapper .custom-input .label-icon.attached > .fa {  text-shadow: 0 0 15px rgba(24, 24, 24, .35);}
.wrapper .custom-input .label-text {  display: inline-block;  padding: 4px;  transition: all .4s 0s ease;}
.wrapper .custom-input .label-text.attached {  font-weight: 600;}

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.9.0/css/all.min.css" /><div class="container">  <form action="#" id="my-form">    <div class="wrapper">      <input type="file" id="my-file" name="my-file" class="my-file" />      <label for="my-file" class="custom-input">      <span class="label-icon">        <i class="fa fa-folder"></i>      </span>      <span class="label-text">Please, choose a file.</span>    </label>    </div>  </form></div>

document.getElementById('test').addEventListener("change", function() {
  var fullPath = document.getElementById('test').value;
  if (fullPath) {
    var startIndex = (fullPath.indexOf('\\') >= 0 ? fullPath.lastIndexOf('\\') : fullPath.lastIndexOf('/'));
    var filename = fullPath.substring(startIndex);
    if (filename.indexOf('\\') === 0 || filename.indexOf('/') === 0) {
      filename = filename.substring(1);
    }
    document.getElementById("test2").innerHTML = filename;;
  }
});

.submit {
  width: 140px;
  height: 40px;
  background-color: red;
  color: #fff;
  text-align: center;
  padding: 10px;
  line-height: 40px;
  cursor: pointer;
}

<input type="file" id="test" style="display:none;">
<label for="test">
    <span class="submit">submit</span>
    <span id="test2">filename</span>
</label>