.dropzone {
    padding: 3em 1em 1em;
    border: 1px dashed #eee;
    background-color: #fcfcfc;
    text-align: center;
    transition:0.3s;
}
.dropzone:hover {
    border-color: #ccc;
}
.dropzone:focus {
    border-color: #aaa;
}
.dropzone input[type="file"]
{
	padding:0;margin:0;position:absolute;z-index:-1;width:0;height:0;opacity:0
}