canvas {
    display: block;
    margin: auto;
    border: 1px solid #ffffff;
}

#playbutton {
    width: 100px;
    height: 50px;
    display: block;
    margin: auto;
    margin-top: 10px;
    font-family: Arial, sans-serif;
    font-size: 30px;
    font-weight: bold;
    background-color: white;
    cursor: pointer;
}
body{background:#000000}

a:link{
	color:#ffffff;	
	text-decoration:none;
}
a:visited{
	color:#ffffff;
	text-decoration:none;
}
a:hover{
	color:red;
	text-decoration:none;
}
a:active{
	color:#ffffff;
	text-decoration:none;
}

.huongdan{color:#ffffff;}

#diem,#thanhtich{color:red;}

h3{color:#ffffff;}