*{
    margin: 0px;
    padding: 0px;
    box-sizing: border-box;
}
.sky{
    background-image: url(./ceu.jpg);
    width: 100%;
    height: 100vh;
    background-size: cover;
}
.c-plane{
    background-image: url(./aviao.png);
    background-size: contain;
    background-repeat: no-repeat;

    position: absolute;
    top:5%;
    height: 30%;
    width: 40%;
    
    animation-name: fly;
    animation-duration: 20s;  
    animation-delay: 2s;
    animation-iteration-count: infinite;
    animation-timing-function: ease-in-out;
}

@keyframes fly {
    100% {
        /* transform: translateX(calc(100vw - 40%)); */
        transform: scale3d(2,2,2) translate3d(100vw, 232px, -135px);;
}
}