.left {
    position: relative;
    width: 200px;
    height: 720px;
    ul {
        width: 100%;
        li {
            width: 100%;
            height: 45px;
            padding-left: 30px;
            box-sizing: border-box;
            line-height: 45px;
            font-size: 14px;
            color:rgba(153,153,153,1);
            &:hover {
                border-left: 2px solid #ED322A;
                background:rgba(255,238,238,1);
                a {
                    color:rgba(237,50,42,1);
                }
            }
        }
    }
}