.delivery_street {
    position: relative;
}
.delivery_street .street-list {
    position: absolute;
    width: 100%;
    top: 100%;
    left: 0;
    background: #fff;
    border: 1px solid #d3dfe4;
    z-index: 1;
}
.delivery_street .street-list .street-item {
    cursor: pointer;
    padding: 10px 6px;
    border-bottom: 1px solid #d3dfe4;
}
.col-sm-6.delivery_street .street-list {
    top: auto;
    left: auto;
}