body {
    background: #fff;
    color: #2f4354;
    font-family: 'PT Sans', sans-serif;
}

header {
    position: absolute;
    left: 0;
    right: 0;
    text-align: center;
    background: #2f4354;
    color: #fff;
    font-size: 22px;
    font-weight: bold;
    line-height: 50px;
    margin-bottom: 50px;
    cursor: pointer;
    z-index: 99;
}

nav {
    padding-top: 100px;
}

iframe#game-view {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding-top: 50px;
    border: 0;
    z-index: 1;
    display: none;
}

.game {
    position: relative;
    display: block;
    height: 340px;
    margin: 10px;
    cursor: pointer;
    border-radius: 3px;
    -webkit-box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.15);
    box-shadow: 0px 1px 5px rgba(0, 0, 0, 0.15);
}
.game.alien-invasion {
    background: url('../../images/alien-invasion.png') no-repeat;
    background-size: cover;
}
.game.clumsy-bird {
    background: url('../../images/clumsy-bird.png') no-repeat;
    background-size: cover;
}
.game.skifree {
    background: url('../../images/skifree.png') no-repeat;
    background-size: cover;
}
.game.supermario {
    background: url('../../images/supermario.jpg') no-repeat;
    background-size: cover;
}
.game.pacman {
    background: url('../../images/pacman.png') no-repeat;
    background-size: cover;
}
.game.pong {
    background: url('../../images/pong.png') no-repeat;
    background-size: cover;
}
.game .title {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;

    background: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    line-height: 30px;
    font-weight: bold;
    text-transform: uppercase;
    text-align: center;
}