this thing implements awesome css+html only multilingual selector together with a nightmode switcher by only using pure css and html. format this thing and arrange properly, so it will look awesome and eco-friendly cute as fuck. remove unnecessary properties or elements as you want, but don't ruin functionality.: <!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>CSS-only Multilingual eco-friendly site</title>
<style>
  .switch-container input[type="checkbox"] {
width: 18px;
height: 18px;
       user-select: text;
   pointer-events: none;
}

.switch-container label:before {
content: "";
position: absolute;
width: 100%;
height: 100%;
background-color: rgba(0, 0, 0, 0.5);
opacity: 0;
transition: opacity 0.3s ease-out;
         user-select: text;
   pointer-events: none;

}

.switch-container input[type="checkbox"]:checked ~ label:before {
opacity: 1;
   user-select: text;
   pointer-events: none;
}
  
  
  body, html {
  margin: 0;
  padding: 0;
  height: 100%;
    line-height: 1.6;
background-color: #f7f7f7;
}
  
  header {
  background-color: #4CAF50;
  color: #FFF;
  padding: 16px 0px 0px 0px;
  text-align: center;
      position: relative;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 18px;
    width: 90%;
  height: 1%;

}

.left, .right {
  position: relative;
}

.left::before, .right::before {
  content: '';
  position: absolute;
  top: 50%;
  border-bottom: 1px dashed #FFF;
  width: 40%;
}

.left::before {
  right: 100%;
  margin-right: 20px;
}

.right::before {
  left: 100%;
  margin-left: 20px;
}
  
.flags-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  --padding: 3px 0;
  background-color: white;
  display: flex;
  justify-content: center;
  align-items: center;
  --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  z-index: 1;
}

.flag-radio {
  display: none;
}

.flag-label {
  cursor: pointer;
  margin: 0 10px;
  transition: 0.3s;
  opacity: 0.6;
  font-size: 24px;
}

.flag-label:hover {
  opacity: 1;
}

.language-option {
  position: run-in;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: none;
  justify-content: center;
  align-items: center;
  padding-top: 0px; /* language-option container text from top height */
}

#english-flag:checked ~ #english,
#hindi-flag:checked ~ #hindi,
#hebrew-flag:checked ~ #hebrew,
#chinese-flag:checked ~ #chinese,
#french-flag:checked ~ #french,
#spanish-flag:checked ~ #spanish {
  display: block;
}

</style>
</head>
<body>  
  <input id="english-flag" type="radio" name="flags" class="flag-radio">
  <input id="hindi-flag" type="radio" name="flags" class="flag-radio">
  <input id="hebrew-flag" type="radio" name="flags" class="flag-radio">
  <input id="chinese-flag" type="radio" name="flags" class="flag-radio">
  <input id="french-flag" type="radio" name="flags" class="flag-radio">
  <input id="spanish-flag" type="radio" name="flags" class="flag-radio">
  
<div class="flags-container">
  <label for="english-flag" class="flag-label">🇬🇧</label>  
  <label for="hindi-flag" class="flag-label">🇮🇳</label>
  <label for="hebrew-flag" class="flag-label">🇮🇱</label>
  <label for="chinese-flag" class="flag-label">🇨🇳</label>
  <label for="french-flag" class="flag-label">🇫🇷</label>
  <label for="spanish-flag" class="flag-label">🇪🇸</label>
</div><br>

<header>
  <h1>
    <span class="left">EcoWare</span>
    <span class="right">Earthwise</span>
  </h1>
</header>
  <div class="switch-container">
    <input type="checkbox" id="switch">
  <label for="switch">Energy saving nightmode layer</label>
</div>
  
<div id="english" class="language-option">
<p>english details going here</p>
</div>

<div id="hindi" class="language-option">
  <p>hindi details going here</p>
</div>

<div id="hebrew" class="language-option">
  <p>hebrew details going here</p>
</div>

<div id="chinese" class="language-option">
  <p>chinese details going here</p>
</div>

<div id="french" class="language-option">
  <p>french details going here</p>
</div>

<div id="spanish" class="language-option">
  <p>spanish details going here</p>
</div>
</body>
</html>