/*#region*/
.container {
    /* width: 700px; */
    min-height: 400px;
    margin: 0px auto;

    background-color: purple;

    display: flex;
    flex-wrap: wrap;

    justify-content: space-evenly;
    align-items: center;
}

.item {
    width: 200px;
    height: 100px;
    line-height: 100px;
    text-align: center;
    font-size: 30px;
}

.item::after {
    content: "点我变色";
}

.item1 {
    background-color: blueviolet;
}

.item2 {
    background-color: green;
}

.item3 {
    background-color: skyblue;
}

.item4 {
    background-color: coral;
}

.item5 {
    background-color: deeppink;
}

.item6 {
    background-color: forestgreen;
}

.item7 {
    background-color: saddlebrown;
}

/* #endregion */