Botão de upload em html
<form action="/action_page.php">
<input type="file" id="myFile"
name="filename">
<input type="submit">
</form>
https://programmingonly.com/
<form action="/action_page.php">
<input type="file" id="myFile"
name="filename">
<input type="submit">
</form><script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form>
<label for="file-upload" class="custom-file-upload">
<i class="fa fa-cloud-upload"></i> Upload Image
</label>
<input id="file-upload" name='upload_cont_img' type="file" style="display:none;">
</form><input id='fileid' type='file' hidden/>
<input id='buttonid' type='button' value='Upload MB' />.custom-file-upload {
border: 1px solid #ccc;
display: inline-block;
padding: 6px 12px;
cursor: pointer;
}