table {
    border-collapse: collapse;
}

th, td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: left;
}
img {
    display: block;
    max-width: 100%;
}
.d-block {
    display: block;
}
.border-red {
    border: 2px solid red;
}