html {
    background: #f2f2f2;
    font-family: sans-serif;
    font-size: 1.2em;
}

#Divh1 {
    width: 100%;
    background-color: #ddd;
    text-align: center;
    padding: 10px 0 10px 0;
    border-bottom: solid 10px #ccd5f0;
    border-radius: 8px;
}

#Divleft {
    width: 78%;
    float: left;
    left: 0;
}

img {
    float: left;
    width: 450px;
    height: 350px;
}

.sidebar {
    width: 20%;
    background-color: #f1f1f1;
    overflow: auto;
    float: right;
    right: 0;
    margin-bottom: 30px;
}

    .sidebar a {
        display: block;
        padding: 15px;
        text-decoration: none;
        border-bottom: solid 2px white;
    }

        .sidebar a.active {
            background-color: #40508d;
            color: white;
        }

        .sidebar a:hover:not(.active) {
            background-color: #555;
            color: white;
        }

h2 {
    color: #6495ed
}

h3 {
    color: #008b8b
}

h4 {
    color: #8a2be2
}

h5 {
    color: brown
}

h6 {
    color: #f0f
}

.footer {
    background: #e6e7e8;
    clear: both;
    border-top: solid 7px #ccd5f0;
    border-radius: 8px
}

@media(max-width:620px) {
    #Divleft, .sidebar {
        width: 100%
    }

    img {
        width: 100%;
        height: auto;
    }
}