.categories {
    padding: 1rem 5%;
    background-color: #f5f5f5;
    margin-top: 15px;
}
.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}
.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 25%;
    width: 50%;
    height: 3px;
    background: var(--highlight);
    border-radius: 3px;
}