This seems to take care of business pretty well. A fidde is here:
<label for="upload-file">A proper input label</label>
<div class="upload-button">
<div class="upload-cover">
Upload text or whatevers
</div>
<!-- this is later in the source so it'll be "on top" -->
<input name="upload-file" type="file" />
</div> <!-- .upload-button -->
/* first things first - get your box-model straight*/
*, *:before, *:after {
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
box-sizing: border-box;
}
label {
/* just positioning */
float: left;
margin-bottom: .5em;
}
.upload-button {
/* key */
position: relative;
overflow: hidden;
/* just positioning */
float: left;
clear: left;
}
.upload-cover {
/* basically just style this however you want - the overlaying file upload should spread out and fill whatever you turn this into */
background-color: gray;
text-align: center;
padding: .5em 1em;
border-radius: 2em;
border: 5px solid rgba(0,0,0,.1);
cursor: pointer;
}
.upload-button input[type="file"] {
display: block;
position: absolute;
top: 0; left: 0;
margin-left: -75px; /* gets that button with no-pointer-cursor off to the left and out of the way */
width: 200%; /* over compensates for the above - I would use calc or sass math if not here*/
height: 100%;
opacity: .2; /* left this here so you could see. Make it 0 */
cursor: pointer;
border: 1px solid red;
}
.upload-button:hover .upload-cover {
background-color: #f06;
}