html, body {
    width: 100%;
    height: 100%;
    
    background-color: black;
}

#sun {
    position: absolute;
   
    top: 50%;
    left: 50%;
    
    
    height: 200px;
    width: 200px;
    margin-top: -100px; 
    margin-left: -100px;
    
     border-color: orange;
    border-width: 8px;
    border-style: solid;
    border-radius: 60%;
    
    box-shadow: 0 0 128px red;
}

#earth {
    position: absolute;
    top: 0;
    left: 50%;
    
    
}

#earth-orbit {
     position: absolute;
    top: 50%;
    left: 50%;

    width: 500px;
    height: 500px;
    margin-top: -250px;
    margin-left: -250px;

    border-width: 2px;
    border-style: dotted;
    border-color: white;
    border-radius: 50%;
}

html, body {
    
    width: 100%;
    height: 100%;
    
   
    background-color: black;
}

#sun {
    position: absolute;
    top: 50%;
    left: 50%;
    
    
    height: 200px;
    width: 200px;
    margin-top: -100px; 
    margin-left: -100px;
    
     border-color: orange;
    border-width: 8px;
    border-style: solid;
    border-radius: 60%;
    
    box-shadow: 0 0 128px red;
}

#earth {
    position: absolute;
    top: 0;
    left: 50%;
    
    
}

#earth-orbit {
     position: absolute;
    top: 50%;
    left: 50%;

    width: 500px;
    height: 500px;
    margin-top: -250px;
    margin-left: -250px;

    border-width: 2px;
    border-style: dotted;
    border-color: white;
    border-radius: 50%;
    
     -webkit-animation: spin-right 10s linear infinite;
     -moz-animation: spin-right 10s linear infinite;
      -ms-animation: spin-right 10s linear infinite;
       -o-animation: spin-right 10s linear infinite;
          animation: spin-right 10s linear infinite;
}


@-webkit-keyframes spin-right {
  100% {
    -webkit-transform: rotate(360deg);
       -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
         -o-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}

@keyframes spin-right {
  100% {
    -webkit-transform: rotate(360deg);
       -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
         -o-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}


h2 {
    font-style: normal;
    color: hotpink;
    font-size: 40px;
    position: absolute;
    top: 900x;
    left: 42%;
    bottom: 20%;   
     box-shadow: 0 0 128px red;
}

#home {
	border-radius: 5px;
	border: 3px solid  #8c8c8c;
	background-color:  #a6a6a6;
	margin-right: auto;
	margin-left: auto;
	margin-bottom: 10px;
	padding-bottom: 10px;
	font-size: 1.25em;
	font-weight: bold;
	text-align: center;
	padding: 15px 15px;
	width: 150px;
}

a:hover {
	color: #4da6ff;
	text-decoration: none;
}