.about-menu {
    padding: 50px 0 20px;
    text-align: center;
    border-bottom: 1px solid #e3e3e3;
    background: #fff;
}

.about-menu ul {
    font-size: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
}

.about-menu ul li {
    height: 46px;
    line-height: 46px;
    display: inline-block;
    margin: 10px;
}

.about-menu ul li a {
    font-size: 18px;
    color: #333;
    display: block;
    padding: 0 48px;
    background: #eaeaea;
    line-height: 46px;
    border-radius: var(--button-radius);
}

.about-menu ul li a:hover {
   background: var(--color-primary);
   color: #fff;
}

.about-menu ul li.active a {
    background: var(--color-primary);
    color: #fff;
}

@media screen and (max-width: 992px) {
    .about-menu ul li {
        margin: 10px;
        width: 45%;
    }
}

@media screen and (max-width: 768px) {
    .about-menu {
        padding: 20px 0 15px;
    }

    .about-menu ul li {
        height: 36px;
        line-height: 36px;
        width: 45%;
    }

    .about-menu ul li a {
        font-size: 14px;
        padding: 0 10px;
    }
}

@media screen and (max-width: 480px) {
    .about-menu ul li {
        width: 100%;
    }
}