.about-sidebar {
    width: 257px;
    padding: 30px;
    background: #F0F4F8;
    border-radius: 30px;
    align-self: start;
    box-sizing: border-box;
}

.about-sidebar .left-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 197px;
}

.about-sidebar .left-menu li {
    padding: 0 0 8px 0;
    margin: 0;
    background: none;
    border-bottom: 1px solid #CEE1F3;
}

.about-sidebar .left-menu li:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.about-sidebar .left-menu a,
.about-sidebar .left-menu a:visited {
    display: block;
    color: #485867;
    text-decoration: none;
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 19px;
    font-weight: 600;
    transition: color .15s;
}

.about-sidebar .left-menu a:hover {
    color: #2C3E50;
}

.about-sidebar .left-menu a.selected,
.about-sidebar .left-menu a.selected:visited,
.about-sidebar .left-menu a.selected:hover {
    color: #E67E22;
    font-weight: 700;
}

@media (max-width: 900px) {
    .about-sidebar {
        width: 100%;
    }
    .about-sidebar .left-menu {
        width: 100%;
    }
}