html {
    font-size: 100%;
}

body {
    margin: 0;
}

header {
    top: 0;
    left: 0;
    right: 0;
    z-index: 20;
    position: sticky;
    font-size: 0;
    background-color: #0000;
}

#logo {
    background-color: #fffc;
}

#logo_icon {
    background-image: url(../images/logo.svg);
    background-repeat: no-repeat;
    background-size: contain;
    margin: 0.5rem;
    width: 24rem;
    height: 3rem;
    display: inline-block;
}

#nav {
    background-color: #000c;
    color: #ccc;
    text-align: right;
}

    #nav > li {
        font-size: 2rem;
        font-family: Courier New;
        padding: 0 0.5rem;
        border-left: 1px solid #ccc;
        display: inline-block;
    }

        #nav > li > a {
            color: #ccc;
            text-decoration: none;
        }

            #nav > li > a:hover {
                text-decoration: underline;
            }

#top_vid {
    width: 100%;
}

h1[id] {
    font-size: 3rem;
    font-family: Courier New;
    margin-top: -6rem;
    padding-top: 6rem;
    text-align: center;
    text-decoration: underline;
}

.content_area {
    text-align: center;
    margin: 0 auto;
}

#photo {
    display: inline-block;
    vertical-align: top;
}

    #photo > div {
        width: 180px;
        height: 240px;
        background-image: url(../images/profile.png);
        background-repeat: no-repeat;
        background-size: contain;
    }

    #photo > ul {
        margin: 0;
        padding: 0;
        font-size: 12px;
        background-color: #ccc;
    }

        #photo > ul > li {
            list-style: none;
        }

#div_about {
    margin-left: 1rem;
    vertical-align: top;
    display: inline-block;
    max-width: 45rem;
}

    #div_about > p {
        text-align: left;
    }

#tbl_history {
    margin: 0.5rem;
    display: inline-block;
    border-collapse: collapse;
}

    #tbl_history tr {
        border-bottom: solid 2px white;
    }

        #tbl_history tr:last-child {
            border-bottom: none;
        }

    #tbl_history th {
        position: relative;
        text-align: left;
        background-color: #52c2d0;
        color: white;
        padding: 0.5rem;
        min-width: 5rem;
    }

        #tbl_history th:after {
            display: block;
            content: "";
            width: 0px;
            height: 0px;
            position: absolute;
            top: calc(50% - 10px);
            right: -10px;
            border-left: 10px solid #52c2d0;
            border-top: 10px solid transparent;
            border-bottom: 10px solid transparent;
        }

    #tbl_history td {
        text-align: left;
        background-color: #eee;
        padding: 10px 20px;
    }

#div_charts {
    background-color: #52c2d0;
    display: inline-block;
    justify-content: center;
    margin: 10px;
}

#div_charts_title {
    color: #fff;
    font-family: Courier New;
}

#tbl_profile_1 {
    display: inline-block;
    vertical-align: top;
    text-align: left;
}

#tbl_profile_2 {
    display: inline-block;
    text-align: left;
    border-collapse: collapse;
}

    #tbl_profile_2 td {
        border: 1px solid #000;
    }

.work_area {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.work_box {
    margin: 32px;
    width: 480px;
    height: 640px;
    display: inline-block;
    border: 1px solid #000;
    text-align: left;
}


    .work_box > .work_title {
        padding: 4px;
        color: #fff;
        font-weight: bold;
        background-color: #0aa;
    }

    .work_box > .work_image {
        width: 480px;
        height: 320px;
        background-size: contain;
        background-repeat: no-repeat;
        background-position: center;
        background-color: #555;
    }

.work_image#work_image_1 {
    background-image: url(../images/work_1.png);
}

.work_image#work_image_2 {
    background-image: url(../images/work_2.png);
}

.work_image#work_image_3 {
}