customize the file button for image upload [duplicate]

Answer 1

You can customize it using only CSS. Go through the link below.

HTML

   
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.btn-upload {
    position: relative;
    overflow: hidden;
    display: inline-block;
}
.btn-upload input[type=file] {
    position: absolute;
    opacity: 0;
    z-index: 0;
    max-width: 100%;
    height: 100%;
    display: block;
}
.btn-upload .btn{
    padding: 8px 20px;
    background: #337ab7;
    border: 1px solid #2e6da4;
    color: #fff;
    border: 0;
}
.btn-upload:hover .btn{
    padding: 8px 20px;
    background: #2e6da4;
    color: #fff;
    border: 0;
}

http://imdebasispanda.blogspot.in/2015/08/custom-upload-button-using-css.html