* {
    box-sizing: border-box;
}

body {
    font-family: Arial;
    background: #f1f1f1;
    margin: 0px;
    padding-top: 50px;
}


/* Header/Blog Title */

.header {
    padding: 30px;
    text-align: center;
    background: #ADD8E6;
}

.header h1 {
    font-size: 50px;
}


/* Style the top navigation bar */

.topnav {
    background-color: #708090;
    overflow: hidden;
    position: -webkit-sticky;
    position: sticky;
    top: 0;
}


/* Style the topnav links */

.topnav a {
    float: left;
    display: block;
    color: #FFDEAD;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
    border-right: 1px solid white;
}

.topnav a:last-child {
    border-right: none;
}


/* Change color on hover */

.topnav a:hover {
    background-color: #ddd;
    color: black;
}


/* Create column */

column {
    float: left;
    width: 100%;
    background-color: #f1f1f1;
    padding-left: 20px;
}


/* Add a card effect for articles */

.card {
    background-color: white;
    padding: 30px;
    margin-top: 20px;
}


/* Clear floats after the columns */

.row:after {
    content: "";
    display: table;
    clear: both;
}


/* button */

#myDIV {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF£» margin-top: 0px;
}

#myDIV1 {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF£» margin-top: 0px;
}

#myDIV2 {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF£» margin-top: 0px;
}

#myDIV3 {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF£» margin-top: 0px;
}

#myDIV4 {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF£» margin-top: 0px;
}

#myDIV5 {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF£» margin-top: 0px;
}

#myDIV6 {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF;
    margin-top: 0px;
}

#myDIV7 {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF;
    margin-top: 0px;
}

#myDIV8 {
    display: none;
    width: 100%;
    padding: 20px;
    text-align: center;
    background-color: white;
    color: #A6ACAF;
    margin-top: 0px;
}

#show-code {
    font-style: italic;
    background: transparent;
    border: none;
    color: teal;
    display: block;
    width: 135px;
    font-size: 15px;
    padding: 5px;
    text-align: left;
    margin: 5px;
    cursor: pointer;
}


/* Footer */

.footer {
    padding: 20px;
    text-align: center;
    background: #E6B0AA;
    margin-top: 20px;
    color: #571B7E;
}


/* Responsive layout - when the screen is less than 800px wide, make the two columns stack on top of each other instead of next to each other */

@media screen and (max-width: 800px) {
    .leftcolumn,
    .rightcolumn {
        width: 100%;
        padding: 0;
    }
}


/* Responsive layout - when the screen is less than 400px wide, make the navigation links stack on top of each other instead of next to each other */

@media screen and (max-width: 400px) {
    .topnav a {
        float: none;
        width: 100%;
    }
}