tetris.css

@font-face {
    font-family: VT323;
    src: url("fonts/VT323-Regular.ttf");
  }

.game-container{
    position: relative;
    top: 0px;
    left: 0px;
}

.hide{
    display: none;
}

.game-button{
    margin: 5px;
    font-family: 'VT323', cursive;
    border: 1px solid #333333;
    background: transparent;
    font-size: 40px;
    color: #ffffff;
    padding: 10px 50px;
    border-radius: 70px;
    cursor: pointer;
    outline: none;
    transition: all .2s;
}

.game-button.fab{
    position: absolute;
    right: 10px;
    bottom: 10px;
    padding: 5px;
    box-sizing: content-box;
    width: 40px;
    height: 40px;
}

.game-button.fab.top{
    position: absolute;
    right: 10px;
    bottom: unset;
    top: 10px;
}

.game-button.play{
    color: #00ff00;
    padding: 20px 80px;
    border: 1px solid #00ff00;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-100%, 20%);
}

.game-button:hover, .game-button:active{
    border-color: #ffffff;
    box-shadow: 0px 0px 20px 1px #ffffff;
    background: #888888;
}

.game-button:active{
    box-shadow: 0px 0px 20px 1px #ffffff;
    background: #ffffff;
    color: #333333;
}

.resume-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-130%, 20%);
}