Position Ja

✨ Jabont

<html>
  <head>
    <title>Let's Start
    </title>
    <style>
      body{
        background:#333;
        margin:0;
        font-family:sans-serif;
      }
      #my_picture{
        width:600px;
        height:400px;
        background:#fff;
        margin:auto;
        margin-top:calc(50vh - 200px);
        border-radius:5px;
        overflow:hidden;
        box-shadow:0px 10px 20px #0003;
        position:relative;
        perspective:1000px;
        transition:background .3s;
      }
      #sky_wheel{
        background:linear-gradient(to bottom,
          hsl(60,100%,50%),
          hsl(30,100%,50%) 50%,
          hsl(280,100%,50%) 50%,
          hsl(230,100%,50%)
        );
        width:100%;
        padding-top:100%;
        border-radius:100%;
        position:absolute;
        left:0;
        bottom:-300px;
        z-index:10;
        transform:rotate(0deg);
        transition:all 1s;
      }
      #my_picture[data-day="-1"] #sky_wheel{
        transform:rotate(180deg);
      }
      #moon{
        background:hsl(60,100%,90%);
        box-shadow:0px 0px 30px hsl(60,100%,90%);
        --w:100px;
        width:var(--w);
        height:var(--w);
        position:absolute;
        left:calc(50% - (var(--w)/2));
        border-radius:100%;
        bottom:50px;
        transition:bottom 1s .4s;
      }
      #my_picture[data-day="1"] #moon{
bottom:-150px;
      }
      #sun{
        --w:100px;
        position:absolute;
        left:calc(50% - (var(--w)/2));
        top:50px;
        animation:sun 10s infinite linear;
        transform:rotate(0deg);
        transition:top 1s .4s;
      }
      #my_picture[data-day="-1"] #sun{
        top:-150px;
      }
      .sun_ray{
        background:hsl(30,100%,50%);
        background-image:radial-gradient(hsl(40,100%,50%) 40%,hsl(20,100%,50%));
        background-size:cover;
        width:calc(var(--w) - 10px);
        height:calc(var(--w) - 10px);
        position:absolute;
        left:5px;
        top:5px;
      }
      .sun_ball{
        background:hsl(60,95%,70%,0.6);
        box-shadow:0px 0px 10px hsl(60,95%,70%,50%);
        width:var(--w);
        height:var(--w);
        border-radius:100%;
        position:relative;
      }
      .star{
        --w:30px;
        position:absolute;
        left:100px;
        bottom:100px;
        width:var(--w);
        height:var(--w);
      }
      .star_x,.star_y{
        width:100%;
        height:100%;
        position:absolute;
      }
      .star_x{
        transform:scaleX(.2);
      }
      .star_y{
        transform:rotate(90deg) scaleX(.2) scaleY(.6);
      }
      .star_x::before,.star_y::before{
        content:" ";
        width:100%;
        height:100%;
        background:#fff;
        box-shadow:0px 0px 10px #fff;
        transform:rotate(45deg);
        position:absolute;
      }
      @keyframes sun{
        from{
          transform:rotate(0deg)}
        to{
          transform:rotate(360deg)}
      }
      .s1{
        left:unset;
        right:100px;
        bottom:50px;
        animation:star 1.23s .5s infinite alternate;
      }
      .s2{
        left:unset;
        right:200px;
        bottom:200px;
        transform:scale(.6);
        animation:star 0.68s .456s infinite alternate;
      }
      .s3{
        left:unset;
        bottom:200px;
        transform:scale(.6);
        animation:star 0.96s .94s infinite alternate;
      }
      .s4{
        transform:scale(1.2);
        animation:star 1.5s infinite alternate;
      }
      @keyframes star{
        from{
          opacity:1}
        to{
          opacity:0}
      }
      .land{
        width:100%;
        height:200px;
        /*         background:#0002; */
        position:absolute;
        bottom:0;
        left:0;
        z-index:10;
        font-size:100px;
        font-weight:bold;
        display:flex;
        justify-content:center;
        align-items:flex-end;
        color:white;
        line-height:70px;
        transform-style:preserve-3d;
        transform-origin:bottom;
        transform:rotatex(100deg);
        transition:all 1s .5s;
      }
      #my_picture[data-day="1"] .land.-day{
        transform:rotatex(0deg);
      }
      #my_picture[data-day="1"] .land.-night{
        transform:rotatex(-180deg);
      }
      #my_picture[data-day="-1"] .land.-day{
        transform:rotatex(180deg);
      }
      #my_picture[data-day="-1"] .land.-night{
        transform:rotatex(0deg);
      }
      #my_picture[data-day="-1"]{
        background:hsl(260,80%,20%);
      }
      #my_picture[data-day="1"]{
        background:hsl(200,100%,70%);
      }
      #toggle{
        position:fixed;
        bottom:1em;
        right:1em;
        background:#fff;
        padding:.5em;
        border-radius:4px;
        cursor:pointer;
      }
    </style>
  </head>
  <body>
    
    <div id="my_picture" data-day="-1">
      <div id="sky_wheel">
        <div class="star s1 ">
          <div class="star_x">
          </div>
          <div class="star_y">
          </div>
        </div>
        <div class="star s2">
          <div class="star_x">
          </div>
          <div class="star_y">
          </div>
        </div>
        <div class="star s3">
          <div class="star_x">
          </div>
          <div class="star_y">
          </div>
        </div>
        <div class="star s4">
          <div class="star_x">
          </div>
          <div class="star_y">
          </div>
        </div>
        <div id="moon">
        </div>
        <div id="sun">
          <div class="sun_ray">
          </div>
          <div class="sun_ray" style="transform:rotate(30deg)">
          </div>
          <div class="sun_ray" style="transform:rotate(60deg)">
          </div>
          <div class="sun_ball">
          </div>
        </div>
      </div>
      
      <div class="land -day">
        <div class="landtext">
          DAY
        </div>
      </div>
      <div class="land -night">
        <div class="landtext">
          NIGHT
        </div>
      </div>
    </div>
    <div id="toggle" onclick="my_picture.dataset.day *= -1">
      Toggle
    </div>
  </body>
</html>