.list_usageguide li{
    padding-left: 1em;
    position: relative;
}
.list_usageguide li:before{
    content: "";
    display: inline-block;
    height: 10px;
    left: 0;
    position: absolute;
    top: calc(50% - 5px);
    width: 10px;
}
.list_usageguide li.blue:before{
    background-color: #205BA0;
}
.list_usageguide li.red:before{
    background-color: #CD2318;
}

.chart_wrapper{
    position: relative;
}