how to change the style of choose file input in css code example

Example 1: input type file custom css

.custom-file-input::-webkit-file-upload-button {
  visibility: hidden;
}
.custom-file-input::before {
  content: 'Select some files';
  display: inline-block;
  background: linear-gradient(top, #f9f9f9, #e3e3e3);
  border: 1px solid #999;
  border-radius: 3px;
  padding: 5px 8px;
  outline: none;
  white-space: nowrap;
  -webkit-user-select: none;
  cursor: pointer;
  text-shadow: 1px 1px #fff;
  font-weight: 700;
  font-size: 10pt;
}
.custom-file-input:hover::before {
  border-color: black;
}
.custom-file-input:active::before {
  background: -webkit-linear-gradient(top, #e3e3e3, #f9f9f9);
}

Example 2: input type file css

<style>
div.fileinputs {
	position: relative;
}

div.fakefile {
	position: absolute;
	top: 0px;
	left: 0px;
	z-index: 1;
}

input.file {
	position: relative;
	text-align: right;
	-moz-opacity:0 ;
	filter:alpha(opacity: 0);
	opacity: 0;
	z-index: 2;
}
</style>
<div class="fileinputs">
	<input type="file" class="file" />
	<div class="fakefile">
		<input />
		<img src="search.gif" />
	</div>
</div>