body 
{
    background-color: #1c4f00;
    color: white;
}
h1
{
color: rgb(218, 218, 218);
font-size: larger;
}
.back
{
    float: left;
    color: #1c4f00;
    margin-left: 50px;
}
a{
    color: #FFFFFF;
    text-decoration: none;
    font-weight: bold;
}
a:hover{
    color: aqua;
}
h1:hover{
    background-color: aqua;
}
div.game_wrapper {
    position: fixed;
    bottom:0;
    top:0;
    right: 0;
    left: 0;
    z-index: 999999;
}
div.close_btn {
    position: absolute;
    top: 10px;
    right: 10px;
    font-size: 30px;
    font-weight: bold;
    color: black;
    padding: 5px;
}
div.close_btn:hover{
    color:#fff
}