/* Styles for the single(post) element */
main {
    padding: 0px 20px 20px 20px; /* Inner spacing */
    border: 6px solid #000; /* Added border */
    border-bottom: none; /* Removed bottom border */
    margin: 0px 10px 0px 10px; /* Outer spacing */
}

.post-header {
    border: 0; /* Removed border */
}

.post-content img {
    max-width: 100%;
    height: auto;
    display: block;
}