.sl-theme-widget-icon {
    width: 32px;
    height: 32px;
    display: inline-block;
    background-size: contain;
    background-repeat: no-repeat;
    opacity: .8;
    transition: 0.3s;
}
.elementor-element:hover .sl-theme-widget-icon {
    opacity: 1;
    transition: 0.3s;
}