.w3-dark-grey1,
.w3-hover-dark-grey1:hover,
.w3-dark-gray1,
.w3-hover-dark-gray1:hover {
    color: #fff !important;
    background-color: #313131 !important
}

.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.margin-bot-32 {
    margin-bottom: 32px;
}

.app-container {
    padding: 16px;
}

.app-header {
    display: table-cell;
    padding: 16px;
}

.app-icon {
    max-width: 88px;
    border-radius: 22%;
    vertical-align: middle;
    box-shadow: 0px 10px 20px -5px rgba(0, 0, 0, 0.75);
}

.app-title {
    margin-top: 0;
    margin-bottom: 2px;
    display: block;
    font-size: 18px;
    line-height: 1.22226;
    font-weight: 600;
    letter-spacing: .027em;
    font-family: "SF Pro Display", "SF Pro Icons", "Apple WebExp Icons Custom", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.app-subtitle {
    font-size: 13px;
    line-height: 1.38462;
    font-weight: 400;
    letter-spacing: -.005em;
    font-family: "SF Pro Text", "SF Pro Icons", "Apple WebExp Icons Custom", "Helvetica Neue", Helvetica, Arial, sans-serif;
    display: block;
    color: #636366;
}


@media (max-width: 800) .video-container {
    display: block;
    max-width: 560px;
    max-height: 315px;
    width: auto;
    height: auto;
}

.video-container {
    display: block;
    width: 560px;
    height: 315px;
}

.collapsible {
    background-color: #bbb;
    cursor: pointer;
    padding: 18px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 15px;
}

.active,
.collapsible:hover {
    background-color: #bbb;
}

.collapsible:after {
    content: '\002B';
    font-weight: bold;
    float: right;
    margin-left: 5px;
}

.active:after {
    content: "\2212";
}

.content {
    max-height: 0;
    padding: 0 18px;
    overflow: hidden;
    transition: max-height 0.2s ease-out;
    background-color: #f1f1f1;
}