input[type="file"]::file-selector-button {
    border: 0;
    border: none;
    cursor: pointer;
    text-align: center;
    color: white;
    background-color: blue;
    padding: 10px 12px;
    font-size: 14px;
    margin-right: 12px;
}
input[type="file"]::file-selector-button:hover {
    color: black;
    background-color: #ccc;
}