.presentation__assets__category {
    /*box*/
    position:sticky;
    top:50px;
    z-index: 1;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    width:100%;
    margin-bottom: 20px;
    padding-top: 20px;

    /*background*/
    background-color: var(--c-tertiary-4);

    /*border*/
    border-bottom: 2px solid var(--c-primary-4);
}