body {
  background-color: #d4d6d5;
}

.main-part {
  background-color: #c7c7c7;
}

.heading-part {
  background-color: #a6aeb3;
}

img {
    max-width: 100%;
    height: auto;
}

@media (max-width: 576px) {
    .heading-part {
        padding: 2rem 1rem;
        text-align: center;
    }

    .heading-part h1 {
        font-size: 1.75rem;
    }

    .main-part {
        padding: 1rem;
    }

	.list-group-item {
        font-size: 0.875rem;
    }

    .main-part .row {
        flex-direction: column;
    }

    .main-part img {
        margin-bottom: 1rem;
    }
}