html, body{
    margin:0;
    padding:0;
    font-family: Arial, Helvetica, Sans-serif;
    font-weight:400;
    font-size: 1em;
    background-color: #ffffff;
    color: #666666;
}
body{
    min-height: 100vh;
    position: relative;
}
header{
    background-color: #888;
}
article{
    padding: 1em;
}
body > article{
    min-height: 300px;
    padding-bottom: 5em;
}
footer{
    position: absolute;
    bottom: 0;
    width: 100%;
    background-color: #888;
    margin: 0;
    padding: 0;
    color:#fff;
    font-family: Arial, Helvetica, Sans-serif;
    font-weight:400;
    font-size: 1.2em;
}
footer nav {
    padding: 1em;
}
header nav ul{
    margin: 0;
    padding: 1em;
}
header nav ul li{
    display: inline-block;
}
header nav ul li a, header nav ul li a:link, header nav ul li a:visited{
    color:#fff;
    text-decoration: none;
    font-family: Arial, Helvetica, Sans-serif;
    font-weight:700;
    font-size: 1.2em;
    margin: 0;
    padding: 0 1em;
}
.container-content{
    max-width:95%;
    min-height:400px;
    margin: 2em auto;
    background-color: #ffffff
}
canvas{
    border: 1px #ccc solid;
}
.container-content #gameToolbar{
    background-color: #dddddd;
}
.container-content #gameToolbar > *{
    display:inline-block;
    background-color: #ffffff;
    padding: .6em;
    margin: .3em;
    color:#666666;
    font-family: Arial, Helvetica, Sans-serif;
    font-weight:400;
    font-size: 1em;
    border-radius: 10px;
    cursor: pointer;
}
.container-content #gameToolbar #gameToolbarHint{
    border-radius: 10px;
    width: 20px;
    height: 20px;
    padding: 0;
    text-align: center;
}