body{
background:url('https://raw.githack.com/Anna4250/Studying/main/sea.jpg');
height:4600px;
}
div#parallax-bg-1{
position: fixed;
width: 1200px;
top: 0;
left: 50%;
margin-left: -600px;
z-index: 1;
}

div#parallax-bg-2{
position: fixed;
width: 1200px;
top: 0;
left: 50%;
margin-left: -600px;
z-index: 2;
}

div#parallax-bg-3{
position: fixed;
width: 960px;
top: 0;
left: 50%;
margin-left: -470px;
z-index: 3;
}

div#parallax-bg-3 div{
background-repeat:no-repeat;
position:absolute;
display:block;
overflow:hidden;
}
div#bg-3-2{
background:url('https://raw.githack.com/Anna4250/Studying/main/fish.png');
width:590px;
height:526px;
top:1050px;
right:40px;
}
div#bg-3-4{
background:url('https://raw.githack.com/Anna4250/Studying/main/tree.png');
width:500px;
height:500px;
top:2800px;
right:500px;
}
div#bg-3-1{
background:url('https://raw.githack.com/Anna4250/Studying/main/seef.png');
width:445px;
height:640px;
top:-100px;
right:100px;
}
div#bg-3-3{
background:url('https://raw.githack.com/Anna4250/Studying/main/fish2.png');
width:500px;
height:600px;
top:1800px;
right:140px;
}
div#parallax-bg-2 div{
background:url('https://raw.githack.com/Anna4250/Studying/main/marine%20life.png');
background-repeat:no-repeat;
position:absolute;
display:block;
width:400px;
height:193px;
overflow:hidden;
}

div#bg-2-1{
top:100px;
left:-310px;
}
div#bg-2-2{
top:270px;
right:-70px;
}
div#bg-2-3{
top:870px;
left:-300px;
}
div#bg-2-4{
top:1120px;
right:-130px;
}
div#bg-2-5{
top:1620px;
left:140px;
}
div#bg-2-6{
top:720px;
left:340px;
}
div#parallax-bg-1 div{
background-repeat:no-repeat;
position:absolute;
display:block;
width:488px;
height:138px;
overflow:hidden;
}
div#bg-1-1{
background:url('https://raw.githack.com/Anna4250/Studying/main/water1.png');
top:200px;
right:450px;
}
div#bg-1-2{
background:url('https://raw.githack.com/Anna4250/Studying/main/water1.png');
top:420px;
left:0px;
}
div#bg-1-3{
background:url('https://raw.githack.com/Anna4250/Studying/main/water1.png');
top:850px;
right:-290px;
}
div#bg-1-4{
background:url('https://raw.githack.com/Anna4250/Studying/main/water1.png');
top:1350px;
left:200px;
}
div#bg-1-5{
background:url('https://raw.githack.com/Anna4250/Studying/main/water1.png');
top:1200px;
left:-200px;
}