.agro_title {
    border-bottom: 2px solid #F00;
    width: fit-content;
}

.agro_title::after {
    content: "";
    width: 30px;
    height: 30px;
    background-image: url(/img/artykuly/radialne-diagonalne-agro/img_537354.png);
    background-size: cover;
    background-position: center;
    display: inline-block;
    position: relative;
    left: 10px;
}

.border_bottom {
    border-bottom: 2px solid #F00;
}