[css] 양쪽으로 늘어나는 애니메이션

.main_category > ul > li::before{
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0%;
    height: 4px;
    background-color: #f6921e;
    -webkit-transform: translateX(-50%);
    transform: translateX(-50%);
    -webkit-transition: width 0.15s ease-in-out;
    transition: width 0.15s ease-in-out;
}
.main_category > ul > li:hover::before{
	width:100%;
}

끄적끄적 나의 메모장임당