github.css

.Layout-main #user-profile-frame > div > div:first-child {
    /* Targets the controls -- the "Find a repository" search, buttons, etc. */
    border-bottom: 0 !important;
}

#user-repositories-list ul {
    /* Targets the list of all repos */
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1em;
}

#user-repositories-list ul li {
    /* Targets each/all repos */
    width: calc(50% - 0.5em) !important; /* ul gap divided by 2 */
    padding: 0.75em !important;
    border-radius: 0.5em;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    box-shadow: rgba(0, 0, 0, 0.1) 0px 2px 8px 0px;
    transition: transform 250ms ease-in-out, opacity 350ms ease-in !important;
    opacity: 0.9;
    user-select: none;
}

#user-repositories-list ul li:hover {
    opacity: 1 !important;
    transform: translateY(-2px);
}

#user-repositories-list ul li.public {
    /* Targets public, not archived repos */
    border-color: rgba(59, 134, 64, .4) !important;
    transition: border-color 250ms ease-in-out;
}

#user-repositories-list ul li.public:hover {
    border-color: rgba(59, 134, 64, 1) !important;
}

#user-repositories-list ul li.public.archived {
    /* Targets public, archived repos */
    border-color: rgba(224, 202, 60, .35) !important;
    transition: border-color 250ms ease-in-out;
}

#user-repositories-list ul li.public.archived:hover {
    border-color: rgba(224, 202, 60, .8) !important;
}

#user-repositories-list ul li.private,
#user-repositories-list ul li.public.archived {
    /* Targets private and/or public archived repos */
    opacity: 0.25;
}

h3.wb-break-all .Label {
    /* Targets the "repo visibility/status tag" of the repo */
    padding: 3px 9px;
    border: 0;
}

#user-repositories-list ul li.private .Label,
#user-repositories-list ul li.public.archived .Label {
    /* Targets the private and/or public archived repos tag */
    background-color: rgba(255, 255, 255, 0.1)
}

#user-repositories-list li.public .Label {
    /* Targets public, not archived repos tag */
    background-color: rgba(59, 134, 64, 1);
    color: white;
    opacity: .5;
    transition: opacity 250ms ease-in-out;
}


#user-repositories-list ul li.public:hover .Label {
    opacity: 1;
}


div.d-inline-block.mb-1 {
    /* Targets the repo name and "repo visibility tag" parent */
    width: 100%;
    margin-top: 5px;
}

div.d-inline-block.mb-1 h3 {
    /* Targets the repo name and "repo visibility tag" parent */
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

span[itemprop="programmingLanguage"],
span[itemprop="spa"] {
    /* Targets the name of the programming language most present in the repo
    represented by the color, e.g. yellow is JavaScript, purple is CSS */
    /* It does not remove the color/circle, only the label */
    display: none;
}

html[data-color-mode="auto"] a[itemprop="name codeRepository"] {
    /* Targets the repo' name, which is a link */
    color: inherit !important;
}

#user-repositories-list ul li > div:nth-child(1) {
    /* Targets the repo's name, last updated, etc. */
    flex: 1;
}

#user-repositories-list ul li > div:nth-child(2) {
    /* Targets the repo's "graph" of commits */
    display: none !important;
}

.js-toggler-container {
    /* Targets the repo's "add star" button/form */
    display: none !important;
}

#user-repositories-list ul li .col-9 {
    /* Tragets the repo's description */
    width: 100% !important;
}