rc-select-city/assets/index.css

```js

.postion-container {
    position: absolute;
    display: none;
    border: 1px solid #22BAA0;
    font-family: "Microsoft Yahei";
    font-size: 14px;
    background-color: rgb(255, 255, 255);
    z-index: 1;
}

.postion-container.show {
    display: block;
}
.postion-container .ant-table-small > .ant-table-content > .ant-table-body > table {
    padding: 0; 
}

.postion-container .ant-table-small {
    border-radius:0;
    border-width: 0 0 1px 0;
}
.postion-container .ant-table-body .ant-table-row {
    cursor: pointer;
}
.postion-container .ant-table-body .ant-table-row.active  {
    background: #eefaf8;
}

.select-city {
    position: relative;
    /*left: 50px;
    top: 50px;*/
}

.select-city .city-input::-webkit-input-placeholder {
    color: #ccc;
}

.select-city tr.active>td {
    background: #eefaf8;
}

.input-city-wrap .allow-clear {
    position: absolute;
    display: none;
    right: 5px;
    top: 7px;
    width: 15px;
    height: 15px;
    background-color: #ccc;
    font-size: 12px;
    line-height: 1em;
    border-radius: 14px;
    text-align: center;
    opacity: .7;
    transition: all .3s;
    cursor: pointer;
}

.select-city .ant-table-pagination {
    float: none;
    text-align: center
}

.select-city .ant-table-small .ant-table-body>table {
    padding: 0;
}

.input-city-wrap:hover .allow-clear {
    display: block;
    z-index: 10000;
}

.input-city-wrap .allow-clear:hover {
    opacity: 1;
}

.input-city-wrap {
    position: relative;
}

.select-city .city-input {
    position: relative;
    display: inline-block;
    padding: 4px 7px;
    width: 100%;
    height: 32px;
    cursor: text;
    font-size: 14px;
    line-height: 1.5;
    color: rgba(0, 0, 0, 0.65);
    background-color: #fff;
    background-image: none;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    transition: all .3s;
}

.select-city .city-input:focus {
    border-color: #57cbb7;
    outline: 0;
    box-shadow: 0 0 0 2px rgba(34, 186, 160, 0.2);
}

.select-city .city-input:hover {
    border-color: #57cbb7;
}

.tab-btns {
    margin: 0;
    padding: 0;
    display: -webkit-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
}

.tab-btns .tab-btn {
    position: relative;
    margin: 0;
    padding: 0;
    list-style: none;
    width: 100%;
    text-align: center;
    cursor: pointer;
    height: 30px;
    line-height: 30px;
}

.tab-btns .tab-btn.tab-btn:hover,
.tab-btns .tab-btn.active {
    background: linear-gradient(to top, #22BAA0 2px, transparent 0);
    background: -moz-linear-gradient(to top, #22BAA0 2px, transparent 0);
    background: -webkit-linear-gradient(to top, #22BAA0 2px, transparent 0);
}

.citys-wrap {
    overflow: hidden;
    padding: 10px 15px;
}

.citys-wrap .area-item-group {
    display: flex;
    padding: 10px 15px;
}

.citys-wrap .city-item-group {
    flex: 1;
}

.citys-wrap .city-item {
    display: inline-block;
    padding: 2px 4px;
    margin-left: 10px;
    cursor: pointer;
    transition: all .15s;
}

.citys-wrap .city-item:hover,
.citys-wrap .city-item.active {
    display: inline-block;
    background-color: #22BAA0;
    color: #fff;
}

.citys-wrap .area-item {
    display: inline-block;
    padding: 2px;
    width: 34px;
    margin-right: 10px;
    font-weight: 700;
}