.year {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.year>li {
    width: calc((100% - 60px) / 3);
    margin-bottom: 20px;
    background-color: #fefefe;
    text-align: center;
    line-height: 50px;
    box-shadow: 0px 0px 3px 0px rgba(0, 0, 0, 0.4);
    padding-bottom: 20px;
}

.year>li>h3 {
    width: 100%;
    line-height: 36px;
    font-size: 18px;
    text-align: left;
    text-indent: 10px;
    padding-top: 10px;
    padding-bottom: 10px;
}

.year>li>table {
    margin: 0 auto;
    width: 94%;
    border: 1px solid #ccc;
}

.year>li>table,
.year>li>table td {
    border: 1px solid #ccc;
    border-collapse: collapse;
    text-align: center;
    vertical-align: middle;
}

.year>li>table td.im {
    background-color: #ff8f00;
}