.button-group {
    list-style: none;
}

.taxonomy-filter {
    float:left;
}

.month-filter {
    clear: both;
}

.month-filter li {
    float: left;
}

.filtres:after, .filtres:before, .grid:before, .grid:after {
    content: "";
    display: block;
    clear: both;
}

.button-group button {
    background-color: transparent;
    color: inherit;
}

.button-group button.active {
    color: #555d66;
    text-decoration: underline;
}

.grid-item {
    width: 250px;
    height: 250px;
    border: 1px solid black;
    overflow: hidden;
    margin: 10px;
    padding: 5px;
    float: left;
}