.ph-category-module-box div ul {
    margin: 0;
}
.ph-category-module-box div ul li {
    list-style-type: none;
    padding-left: 1em;
    padding-right: 1em;
    display: inline-block;
}
.ph-category-module-box div ul li:before {
    content:'';
    display:inline-block;
    height:1em;
    width:1em;
    background-image:url('folder.svg');
    background-size:contain;
    background-repeat:no-repeat;
    padding-left: 1.3em;
}

.ph-category-module-box div ul li.ph-active {
    background: #f0f0f0;
    border-radius: 3px;
}