.toggle-graph {
    float: left;
    margin-left: 16px;
    cursor: pointer;
    position: relative;
    z-index: 1;
}
.toggle-graph svg {
    height: 20px;
    width: 20px;
}
.toggle-graph svg path {
    fill: #777;
}

.toggle-graph.active svg path,
.toggle-graph:hover svg path,
.toggle-graph:focus svg path {
    fill: black;
}