Tutorial Custom File Input Styling in WebKit/Blink
<input type="file" class="custom-file-input">
.custom-file-input::-webkit-file-upload-button {
visibility: hidden;
}
.custom-file-input::before {
content: 'Select some files';
display: inline-block;
background: -webkit-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);
}
Demo
See the Pen Custom File Inputs in WebKit/Blink by Chris Coyier (@chriscoyier) on CodePen
Fair warning: it doesn't show you the file name selected, but you might be able to tweak it to do that. I find typically these days you're triggering an event after file selection and snagging the data that way anyway.