body {
    margin-top: 75px; /* 100px is double the height of the navbar - I made it a big larger for some more space - keep it at 50px at least if you want to use the fixed top nav */
}

footer {
    margin: 50px 0;
}

.panel-heading {
    padding: 5px;
}

.panel-heading img {
    float: right;
    margin-top: 5px;
}

.panel-body h4 {
    border-bottom: 1px solid black;
    margin-top: 30px;
}

.container {
    width: 100%;
}

@media (min-width: 992px) {
    .col-md-9 {
        width: calc(100% - 20em);
        float: left;
    }

    .col-md-3 {
        width: 20em;
        float: left;
    }
}

figure img {
    max-width: 100%;
}