* {
    box-sizing: border-box;
}

a {
    color: blue;
    text-decoration: none;
}

#columns:after {
    display: block;
    clear: both;
    content: "";
}

#arena {
    clear: none;
    text-align: center;
}

#arena:after {
    display: block;
    clear: both;
    content: "";
}

#menu {
    font-family: helvetica, sans-serif;
    font-size: 1em;
}

#content {
    clear: none;
    display: inline-block;
    font-family: helvetica, sans-serif;
    font-size: 1em;
    text-align: left;
}


.footnote {
    font-size: 0.75em;
}

.lastmod {
    font-size: 0.667em;
}

img {
    max-width: 100%;
}

@media only print {
    #menu {
        display: none;
    }
    #arena {
        display: inline;
    }
    #content {
        display: inline;
    }
}

@media only screen {
    #arena {
        overflow: hidden;
        clear: both;
	    padding: 16px;
    }
    #menu {
        background-color: #e8e8ff;
        clear: both;
    }
}

@media only screen and (max-device-width: 700px){
    * {
        /* Defeat Chrome's auto-embiggening */
        max-height: 9999999px;
    }
    body {
        font-size: 1.66em;
    }
    #menu {
        padding-top: 16px;
    }
}
@media only screen and (min-width: 700px) and (min-device-width: 700px){
    body {
        background-color: #e8e8ff;
        margin-top: 0;
        margin-bottom: 0;
    }
    #arena {
        clear: none;
        min-height: 100vh;
        border-left: 6px solid #000080;
        background-color: #f2f2f2;
    }
    #content {
/*        float: left;*/
        max-width: 700px;
        display: inline-block;
    }
    #menu {
        clear: none;
        float: left; 
        width: 200px;
        margin: 16px;
    }
}