#header {
    background-size: cover;
    position: relative;
}

#flags{
    margin-bottom: 2%;
}


#branding {
    z-index: 2;
}

#activityIntro {
    margin-top: 0;
}

#teacher-notes {
    margin: 1em auto 2em;
}

#teacher-notes i {
    padding-right: .3em;
}

.banner-title {
    font-size: 3.2em;
    text-align: center;
    margin-top: .8em;
    margin-bottom: 2em;
    line-height: 1.2em;
    text-transform: uppercase;
    font-weight: 900;
    padding: .8em;
    border-top: 1rem solid #0069C0;
    border-bottom: 1rem solid #0069C0;
}

.tile {
    display: flex;
    flex: 1 1 200px;
    padding: 10px;
    box-sizing: border-box;
    min-height: 200px;
    height: 200px;
    align-items: center;
    justify-content: center;
    border: 5px solid #0069C0;
    cursor: pointer;
    transition: all 200ms ease-out;
    text-align: center;
}

.tile:hover,
.tile.active {
    background: #0069C0;
    color: #FFF;
    font-weight: 600;
}


#content-wrapper {
    margin-top: 2em;
    margin-bottom: 1em;
}

.head-row {
    position: relative;
    border-bottom: 3px solid #0069C0;
}


.head-row .close-content {
    position: absolute;
    right: 0px;
    top: 0px;
}


li h4 {
    margin: .4em;
}

ul.files-list li {
    list-style: none;
}

#intro-wrapper {
    min-height: 405px;
}

#intro-wrapper svg {
    width: 0;
    height: 0;
}

.close-content {
    background: none;
    box-shadow: none;
    border: none;
    float: right;
}

.close-content:hover {
    color: #0069C0;
}

#content-wrapper {
    display: none;
    background: #f7f7f7;
    border-bottom: 3px solid #0069C0;
}

.content-wrapper {
    display: none;
    padding-bottom: 50px;
}

li.sub {
    list-style: none;
    font-weight: 600;
    padding-top: 1em;
    padding-bottom: .5em;
}

li.pdf,
li.html,
li.ppt,
li.exl {
    list-style: none;
}

li.pdf>a:hover,
li.html>a:hover,
li.ppt>a:hover,
li.exl>a:hover {
    color: #241D3C;
    font-weight: 600;
}

.html:before {
    content: "\f0c1";
    font-family: FontAwesome;
    padding-right: 1em;
}

.pdf:before {
    content: "\f1c1";
    font-family: FontAwesome;
    padding-right: 1em;
}

.ppt:before {
    content: "\f1c4";
    font-family: FontAwesome;
    padding-right: 1em;
}


.exl:before {
    content: "\f1c3";
    font-family: FontAwesome;
    padding-right: 1em;
}

#image-ref {
    position: relative;
    top: -40px;
    color: #888;
    font-size: 12px;
    float: right;
}

li.unit-item {
    list-style: none;
    margin-bottom: 2em;
}


#intro-wrapper svg {
    display: block;
    margin: 0 auto;
}


@media (max-width: 768px) {
    #intro-wrapper {
        min-height: 191px;
    }

    #intro-wrapper svg {
        display: block;
        margin: 0 auto;
        width: auto!important;
        height: 191px!important;
    }

    .tile h1 {
        font-size: 1em;
        line-height: 1.4em;
    }
}

@media (min-width: 768px) {
    #intro-wrapper {
        min-height: 258px;
        display: flex;
    }

    #intro-wrapper svg {
        width: auto!important;
        height: 258px!important;
    }

    .tile h1 {
        font-size: 1.4em;
    }
}

@media (min-width: 992px) {
    #intro-wrapper {
        min-height: 335px;
    }

    #intro-wrapper svg {
        width: auto!important;
        height: 335px!important;
    }
}

@media (min-width: 1200px) {
    #intro-wrapper {
        min-height: 405px;
    }

    #intro-wrapper svg {
        width: auto!important;
        height: 400px!important;
        margin: 0 auto!important;
    }
}


@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) and (-webkit-min-device-pixel-ratio: 1) {


    #into-wrapper {
        display: flex;
        justify-content: center
    }
}