.nav-down li a{background:url(images/sss1.png)right 10px center no-repeat !important;background-size: 7px !important;}
.nav-down li a:hover{background:url(images/sss2.png)right 10px center no-repeat !important;background-size: 7px !important;}

.list23 .a{
    padding: 0 .3rem;
    transition: .5s;
    height: .8rem;
align-items: center;
    position: relative;
    z-index: 1;
    overflow: hidden;}


.list23 .a:before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: -1;
    background: linear-gradient(to left, #4ae0a8, #275ee0);
    transform: translateX(-101%);
    transition: .5s;}
.list23 .a:hover:before {
    transform: translateX(0);}
.list23 .a:hover {
    color: #fff;}