header {
    background-color: white;

    .title-bar {
        line-height: 25px;
        text-align: center;
    }

    @separator-color: lighten(grey, 15%);

    .menu {
        padding: 10px;
        border-bottom: solid @separator-color 1px;
    }
}

.filter-input .popover {
    top: 27px;
    display: block;
    width: 100%;
}