.maincontent {
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
    border: none;
}

.about-section {
padding-block: 30px;
}

.about-section .flex-row {
align-items: center;
}
.about-image {
text-align: center;
}

.about-image img {
max-width: 520px;
width: 100%;
margin-inline: auto;
}