.add-layer-toggle>div {
    width: 42px;
    padding: 10px 0;
    border-radius: 21px;
    text-align: center;
    margin: auto;
    position: absolute;
    left: 50%;
    margin-top: -20px;
    cursor: pointer;
    z-index: 98;
    background: #FFF;
    color: #BBB;
    box-shadow: 0 0 5px -1px #333;
    font-size: 16px;
}


.add-layer{
    height: 0;
}

.add-layer.open{
    height: 170px;
    box-shadow: inset 0 0 200px #999, inset 0 0 11px #000;
    .add-layer-toggle>div {
        margin-top: 55px
    }
}
.add-layer .btn-block {
    padding: 15px;
    font-size: 16px;
    border: none;
    background: rgba(255, 255, 255, 0.65);
    white-space:normal;
    height: 120px;
}

.add-layer .btn-block:hover {
    background: rgba(255, 255, 255, 0.95);
}

.add-layer-toggle {
    border-bottom: 1px dashed #eee;
}

.add-layer-toggle>div {
    width: 42px;
    padding: 10px 0;
    border-radius: 21px;
    text-align: center;
    margin: auto;
    position: absolute;
    left: 50%;
    margin-top: -20px;
    cursor: pointer;
    z-index: 98;
    background: #FFF;
    color: #BBB;
    box-shadow: 0 0 5px -1px #333;
    font-size: 16px;
}


.add-layer{
    height: 0;
}

.add-layer.open{
    height: 170px;
    box-shadow: inset 0 0 200px #999, inset 0 0 11px #000;
    .add-layer-toggle>div {
        margin-top: 55px
    }
}
.add-layer .btn-block {
    padding: 15px;
    font-size: 16px;
    border: none;
    background: rgba(255, 255, 255, 0.65);
    white-space:normal;
    height: 120px;
}

.add-layer .btn-block:hover {
    background: rgba(255, 255, 255, 0.95);
}

Add bottom line to layer
Add bottom line to layer
