* {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
}

body {
   width: 100%;
   height: 100vh;
   background-image: url('image/bg2.jpg');
   background-size: cover;
   display: flex;
   justify-content: center;
   align-items: center;
}

.orbit {
   width: 500px;
   height: 500px;
   border: 1px solid white;
   border-radius: 50%;
   position: relative;
   animation: orbit-rotate 20s infinite linear;
}

.earth {
   width: 100px;
   height: 100px;
   background-image: url('image/earth.png');
   background-size: cover;
   border-radius: 50%;
   position: absolute;
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
   box-shadow: inset 0px 0px 5px #FDFFF29E, inset 30px 0px 50px #000;
   animation: earth-rotate 10s infinite linear;
}

.moon {
   width: 50px;
   height: 50px;
   background-image: url('image/moon.jfif');
   background-size: cover;
   border-radius: 50%;
   position: absolute;
   top: 0;
   left: 50%;
   transform: translate(-50%, -50%);
   animation: moon-orbit 5s infinite linear;
}

@keyframes earth-rotate {
   0% {
       transform: translate(-50%, -50%) rotate(0deg);
   }
   100% {
       transform: translate(-50%, -50%) rotate(360deg);
   }
}

@keyframes moon-orbit {
   0% {
       transform: rotate(0deg) translate(200px) rotate(0deg);
   }
   100% {
       transform: rotate(360deg) translate(200px) rotate(-360deg);
   }
}

@keyframes orbit-rotate {
   0% {
       transform: rotate(0deg);
   }
   100% {
       transform: rotate(360deg);
   }
}