.custom-file-upload {
    cursor: pointer;
}

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

.custom-file-upload:hover .button {
    opacity: 0.8;
}

.custom-file-upload .button {
    transition: .5s ease;
    opacity: 0;
    position: absolute;
    transform: translate(16px, 16px);
}