Review custom css from Help

@aschmoe would be great to talk through this custom CSS I have on our site (and help until today) to see what should be incorporated into main styles:
/* Headings */

h1, h2, h3, h4, h5, h6, .h3, .h2, .h4, .h1 {
    font-weight: 900;
    letter-spacing: -.01em;
}

/* Navigation */

.nav-logo img, .hide-site-name img.logo {
    max-width: 175px !important;
}

/* Quote */

.jumbotron:not(.jumbotron-image), .nav-contain .nav-pills li.active a, .btn-primary {
    background-color: #0071BC !important;
    border-color: #0071BC !important;
}
.widget-proudcity-custom-quote-title h1 {
    font-size: 50px;
    margin-top: 0 !important;
}
.quote-menu {
    background-color: #f1f1f1;
    border: 1px solid #e4e2e0;
    border-radius: 3px;
    padding: 20px 10px   0px 10px !important;
    margin-top: 30px !important;
    margin-bottom: 30px !important;
}
.quote-menu .navbar-nav>li>a {
    padding: 6px 12px !important;
    margin-right: 10px;
}
.help-block {
    display: block;
    margin-top: 15px;
    margin-bottom: 10px;
    color: #212121;
}
.panel-grid-cell:only-child .so-panel {
    margin-bottom: 0 !important;
}
hr.hidden-print {
    margin-top: 0px;
    margin-bottom: 0px;
    border: 0;
    border-top: 1px solid #fff;
}
.quote-hero h1 {
    padding-bottom: 20px;
    padding-top: 30px;
}

.jumbotron-header-container {
    background-color: #205493;
}
.jumbotron.jumbotron-inverse .jumbotron-bg {
    background: rgba(0, 113, 188,.8);
}
.jumbotron a, .jumbotron a:visited {
    color: #fff;
    text-decoration: underline;
}
.jumbotron a:hover {
    color: #fff;
    text-decoration: none;
}

/* People */

.people {
    text-align: center;
}
.people img {
    max-width: 150px;
    margin-bottom: 20px;
    border-radius: 50%;
}

/* Images */

.img-border img {
    border: 10px solid #f1f1f1;
    border-radius: 10px;
    margin-bottom: 20px;
    padding: 10px;
}
.govtech img {
    max-width: 175px;
}
.seals img {
    max-width: 110px;
}
.partner-horiz img {
    max-width: 195px;
    margin-bottom: 10px;
    margin-top: 10px;
}
.partner-circle img {
    max-width: 110px;
    margin-bottom: 10px;
    margin-top: 10px;
}

/* Icons */

.icon .fa {
    color: #0071BC;
    font-size: 50px;
}
.icon h2 {
    margin-bottom: 0;
    margin-top: 0;
}

/* fix for agency sizes alex 4/25 */
.card-wrap.agency h3,
.card-wrap.agency .h3
{
    font-weight: 400;
    font-size: 20px;
    line-height: 1.5;
}

@media screen and (max-width: 779px) {
    .card-wrap.agency h3,
    .card-wrap.agency .h3
    {
            font-size: 15px;
    }
}

/* Help */

.help {
    background: #0071BC;
    margin-bottom: 40px;
    margin-top: 40px;
    padding: 30px 0 50px 0;
}
.help a, .help a:visited, .help, .help h2 {
    color: #fff;
}
.help a, .help a:visited {
    text-decoration: underline;
}
.help a, .help a:visited {
    text-decoration: underline;
}
.help .fa {
    color: #fff;
    font-size: 70px;
    padding-top: 40px;
}
/* Apps */

.apps {
    text-align: center;
}
.apps img {
    border: 1px solid #f1f1f1;
    border-radius: 5px;
    width: 100%;
    max-width: 125px;
}
.apps h3 {
    font-size: 15px;
}
.apps .panel-grid-cell {
    background: #f1f1f1;
    margin-bottom: 20px;
    padding: 10px;
}

/* Plans */

.plan {
    border: 1px solid #d6d7d9;
    border-radius: 3px;
    padding: 10px;
    margin-bottom: 20px;
}

/* Table */

table {
    border: 1px solid #f1f1f1;
    width: 100%;
}
th {
    text-align: left;
}
th, td {
    padding: 15px;
    text-align: left;
}
tr:nth-child(even) {background-color: #f1f1f1;}

/* Media */

.media {
    margin-bottom: 2em;
}
.media img {
    border: 1px solid #f1f1f1;
}

/* Forms */

.formWrap, .formButtonWrap {
    margin: 0 !important;
    padding: 0 !important;
}
proudcity / wp-proudcity

Review custom css from Help #1744
