.mailform label input[type="file"] {
    display: none;
}

input.js-file_input {
    display: none;
}

.mailform label.file {
    cursor: pointer;
    display: inline-block;
    position: relative;
    padding: 5px 63px 0 10px;
    z-index: 1;
    height: 36px;
    background: url('/assets/file.png') no-repeat left center;
}

.mailform label .file_replace {
    display: block;
    font-size: 16px;
    margin-left: 40px;
}