<section id="main">
      <!--Navigation-->
      <nav>
        <div class="logo">
          <a href="#">LOGO</a>
        </div>
        <input class="menu-btn" type="checkbox" id="menu-btn" />
        <label class="menu-icon" for="menu-btn">
          <span class="nav-icon"></span>
        </label>
        <!--Navigation-->
        <ul class="menu">
          <li><a href="#main">Home</a></li>
          <li><a href="#services">Services</a></li>
          <li><a href="#about">About</a></li>
          <li><a href="#contact">Contact</a></li>
        </ul>
      </nav>
  
      <div class="content">
        <h1>User Preferences</h1>
      <p>prefers-color-scheme</p>
      </div>
  
    </section>
@import url("https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins";
}
:root {
  --bg-color: repeating-linear-gradient(
    45deg,
    #876a9e,
    #876a9e 50px,
    #b393d3 50px,
    #b393d3 100px,
    #a288b2 100px,
    #a288b2 150px
  );
  --nav-content-bg: rgba(255, 255, 255, 0.1);
  --text-color: #301934;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-color: repeating-linear-gradient(
      45deg,
      #553c9a,
      #553c9a 50px,
      #3a1e4f 50px,
      #3a1e4f 100px,
      #301934 100px,
      #301934 150px
    );
    --nav-content-bg: rgba(0, 0, 0, 0.5);
    --text-color: #b393d3;
  }
}

ul {
  list-style: none;
}
a {
  text-decoration: none;
}
nav {
  position: fixed;
  width: 100%;
  display: inline-flex;
  justify-content: space-around;
  align-items: center;
  height: 60px;
  padding: 0px 5%;
  z-index: 1;
  backdrop-filter: blur(5px);
  background-color: var(--nav-content-bg);
}
.logo a {
  font-family: "Roboto", sans-serif;
  font-weight: 700;
  font-size: 2rem;
  letter-spacing: 0.5px;
  color: var(--text-color);
}
nav ul {
  display: flex;
}
nav ul li a {
  height: 40px;
  line-height: 43px;
  margin: 10px;
  padding: 0px 30px;
  display: flex;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-color);
  transition: 0.1s;
}
#main {
  width: 100%;
  min-height: 100vh;
  position: relative;
  background-image: var(--bg-color);
  background-size: cover;
  background-attachment: fixed;
}
.content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 70%;
  height: 70%;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex-direction: column;
  border-radius: 5px;
  backdrop-filter: blur(5px);
  background-color: var(--nav-content-bg);
}
.content h1 {
  font-size: 3rem;
  font-weight: 600;
  color: var(--text-color);
}
.content p {
  font-size: 2rem;
  color: var(--text-color);
}
nav .menu-btn {
  display: none;
}


@media (max-width: 900px) {
  nav {
    justify-content: space-between;
    height: 65px;
    padding: 0px 30px;
  }
  .logo img {
    height: 35px;
  }
  .menu {
    display: none;
    position: absolute;
    top: 65px;
    left: 0px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
    padding: 0px;
    margin: 0px;
  }
  .menu li {
    width: 100%;
  }
  nav .menu li a {
    width: 100%;
    height: 40px;
    justify-content: center;
    align-items: center;
    margin: 0px;
    padding: 25px;
    border: 1px solid rgba(38, 38, 38, 0.03);
  }
  nav .menu-icon {
    cursor: pointer;
    float: right;
    padding: 28px 20px;
    position: relative;
    user-select: none;
  }
  nav .menu-icon .nav-icon {
    display: block;
    height: 2px;
    position: relative;
    transition: background 0.2s ease-out;
    width: 18px;
  }
  nav .menu-icon .nav-icon::before,
  nav .menu-icon .nav-icon::after {
    content: "";
    display: block;
    height: 100%;
    position: absolute;
    transition: all ease-out 0.2s;
    width: 100%;
  }
  nav .menu-icon .nav-icon:before {
    top: 5px;
  }
  nav .menu-icon,
  .nav-icon:after {
    top: -5px;
  }
  nav .menu-btn:checked ~ .menu-icon .nav-icon {
    background: transparent;
  }
  nav .menu-btn:checked ~ .menu-icon .nav-icon:before {
    transform: rotate(-45deg);
    top: 0;
  }
  nav .menu-btn:checked ~ .menu-icon .nav-icon:after {
    transform: rotate(45deg);
    top: 0;
  }
  nav .menu-btn {
    display: none;
  }
  nav .menu-btn:checked ~ .menu {
    display: block;
  }
}

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