.fb-form-custom-style .fb-file-uploader .qq-upload-button-hover,
.fb-form-custom-style .fb-file-uploader .qq-upload-button:hover {
    border-top: var(--fb-upload-border-top, 1px) solid var(--fb-upload-border-color-hover, var(--fb-upload-border-color-normal, #CCC));
    border-right: var(--fb-upload-border-right, 1px) solid var(--fb-upload-border-color-hover, var(--fb-upload-border-color-normal, #CCC));
    border-bottom: var(--fb-upload-border-bottom, 1px) solid var(--fb-upload-border-color-hover, var(--fb-upload-border-color-normal, #CCC));
    border-left: var(--fb-upload-border-left, 1px) solid var(--fb-upload-border-color-hover, var(--fb-upload-border-color-normal, #CCC));
    color: var(--fb-upload-color-hover, var(--fb-upload-color-normal, inherit));
    background-color: var(--fb-upload-bg-color-hover, var(--fb-upload-bg-color-normal, #EEE));
    box-shadow: var(--fb-upload-shadow-hover-x, var(--fb-upload-shadow-normal-x, 0)) var(--fb-upload-shadow-hover-y, var(--fb-upload-shadow-normal-y, 0)) var(--fb-upload-shadow-hover-blur, var(--fb-upload-shadow-normal-blur, 0)) var(--fb-upload-shadow-hover-spread, var(--fb-upload-shadow-normal-spread, 0)) var(--fb-upload-shadow-hover-color, var(--fb-upload-shadow-normal-color, transparent));
}
.fb-preview-remove:hover {
    background: #000;
}