li + li::before {
content: "";
background:url(".../img/angle-right-solid.svg") no-repeat;
position:absolute;
width:10px;
height:10px;
background-size:100%;
background-position:50% 50%
}
.animated.flip {
-webkit-backface-visibility: visible;
backface-visibility: visible;
-webkit-animation: flip 3s;
animation: flip 3s;
}