.mainmenu ul li ul li a:before{
    content: "\f1b9";
    position: absolute;
    top: 18px;
    left: 18px;
    font-family: "FontAwesome";
    width: 11px;
    height: 11px;
    text-align: center;
    border-radius: 50%;
    display: inline-block;
    font-size: 1em;
    line-height: 1;
    color: var(--theme-color);
    font-weight: 900;
    opacity: 0;
    visibility: visible;
    -webkit-transition: 0.3s ease-in-out;
    transition: 0.3s ease-in-out;
}

.mainmenu ul li ul li a:hover:before {
    visibility: visible;
    opacity: 1;
    left: 4px;
}