@media screen and (max-height: 640px) {
    .container.container-single{
        padding-top: 3px !important;
    }
}
#gamebox {
    margin: 0px;
    position: relative;
}
canvas {
    border: 0px;
    background: #161c1c;
    /*border: 2px solid #313131;*/
}
.gameover {
    display: block;
    margin: 0 auto;
    width: 750px;
    height: 425px;
    text-align: center;
    vertical-align: middle;
    position: absolute;
    top: 0px;
    background-color: rgba(22, 28, 28, 0.95);
}

.gameover p.msg {
    font-family: Arial;
    font-size: 24px;
    color: grey;
    margin: 0 auto;
    margin-top: 150px;
}
.gameover span {
    font-family: Arial;
    font-size: 40px;
    color: white;
    margin: 20px auto;
}

#restartgamebutton {
    display: block;
    margin: 16px auto;
    width: 120px;
    padding: 6px;
    background-color: #00BB00;
    font-family: Arial;
    font-size: 24px;
    color: red;
    border-radius: 10px;
    text-decoration: none;
    cursor: pointer;
}

#restartgamebutton:hover {
    background-color: #9f8b77;
}