.list01 {
    margin: 20px 0 0;
    padding:0;
    list-style: none;
    counter-reset: li;
}
.list01 li {
    border: 2px solid #DDDDDD;
    background: #F3F4F6;
    position: relative;
    margin-bottom: 20px;
    padding: 16px 10px;
    transition-duration: 0.4s;
}
.list01 li:hover {
    z-index: 1;
    border: 2px solid #ADCEE9;
}
.list01 li:before {
    border: 2px solid #ADCEE9;
    position: absolute;
    top: -14px;
    padding: 2px 10px;
    font-size: 11px;
    font-weight: bold;
    color: #0468ff;
    background: #F7FAFD;
    counter-increment: li;
    content: counter(li);
    transition-duration: 0.3s;
}
.list01 li:hover:before {
    border: 2px solid #055de1;
    background: #0468ff;
    color: #FFF;
    transform: translate(-12px, 0);
}
.list01 li:after {
    content: "";
    position: absolute;
    transition-duration: 0.4s;
    transition-property: width;
    z-index: -1;
    background: #F0F5FB;
    height: 100%;
    left: 0;
    top: 0;
    width: 0;
}
.list01 li:hover:after {
    width: 100%;
}