.test-color {
    /* background: rebeccapurple; */
}

.test2-color {
    /* background: red; */
}

.test3-color {
    /* background: blue; */
}

.container {
    font-family: "Microsoft YaHei", 微软雅黑;
}

.f-d-r {
    display: flex;
    flex-direction: row;
}

.f-d-c {
    display: flex;
    flex-direction: column;
}

.center {
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}

.flex-center {
    display: flex;
    justify-content: center;
    justify-items: center;
    align-items: center;
    align-content: center;
}

.item {
    display: flex;
    background: #167cda;
    width: 12em;
    height: 12em;
    margin-left: 6em;
    margin-right: 6em;
    border-radius: 5px;
}

.item:hover {
    background: rgba(13, 255, 249, 0.3);
    box-shadow: 0 0 6px 3px rgba(0, 135, 132, 0.5);
}

.item-img {
    width: 5em;
    height: 5em;
}