.ol-control.ol-overview {
    position: absolute;
    right: 0px;
    text-align: left;
    bottom: 0px;
}

.ol-control.ol-overview .panel {
    display: block;
    width: 260px;
    height: 140px;
    margin: 0px;
    background-color: #fff;
    border: 1px solid #369;
    cursor: pointer;
}

.ol-overview:not(.ol-collapsed) button {
    position: absolute;
    bottom: 2px;
    left: 2px;
    z-index: 2;
}

.ol-control.ol-overview.ol-collapsed .panel {
    display: none;
}

.ol-overview.ol-collapsed button:before {
    content: '\00bb';
}

.ol-overview button:before {
    content: '\00ab';
}

.ol-control-right.ol-overview {
    left: auto;
    right: 0.5em;
}

.ol-control-right.ol-overview:not(.ol-collapsed) button {
    left: auto;
    right: 2px;
}

.ol-control-right.ol-overview.ol-collapsed button:before {
    content: '\00ab';
}

.ol-control-right.ol-overview button:before {
    content: '\00bb';
}

.ol-control-top.ol-overview {
    bottom: auto;
    top: 5em;
}

.ol-control-top.ol-overview:not(.ol-collapsed) button {
    bottom: auto;
    top: 2px;
}