@charset "UTF-8";
/*玩家样式*/
#player {
    transform: rotateY(180deg);
    position: absolute;
    background: url("../images/ships/playerShip.gif");
    width: 78px;
    height: 68px;
    top: calc(50% - 34px);
    left: -78px;
    z-index: 1;
    pointer-events: none;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.5));
}

/*敌友飞船*/
.enemyShips, .friendlyShips {
    width: 78px;
    height: 68px;
    position: absolute;
    z-index: 998;
}

/*外星人飞船*/
.enemyShipGreen {
    background: url("../images/ships/enemyShip3.gif");
    width: 78px;
    height: 52px;
    position: absolute;
}

/*行星*/
.planets {
    background-size: contain;
    position: absolute;
    animation: PlanetRotate 20s linear infinite;
    background-repeat: no-repeat;
}

/*燃料*/
.fuels {
    background: url("../images/fuel.png");
    width: 31px;
    height: 41px;
    animation: fuelAnimation 3s linear infinite;
    position: absolute;
}

/*小行星*/
.aestroids {
    background-size: 100% 100%;
    position: absolute;
    animation: PlanetRotate 8s linear infinite;
}

/*敌方子弹*/
.enemyBullets {
    background: url("../images/bullet.png");
    width: 51px;
    height: 14px;
    position: absolute;
    transform: rotateY(180deg);
}

/*玩家子弹*/
.playerBullets {
    background: url("../images/bullet.png");
    width: 51px;
    height: 14px;
    position: absolute;
}