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HTML 

              
                <!-- nav start -->
<nav>

  <label for="drop" class="toggle">&#8801; </label>
  <input type="checkbox" id="drop">

  <ul class="menu">
    <li class="logo">Buck Island</li>
    <li><a href="#">About <span>Buck Island</span></a></li>
    <li><a href="#">Location</a></li>
    <li><a href="#">Area <span>Information</span></a></li>
    <li><a href="#">Community <span>Information</span></a></li>
    <li><a href="#">Rentals</a></li>
    <li><a href="#">Contact <span>Us</span></a></li>
  </ul>
</nav>

<!-- hand written -->
<h1>Your family vacation destination</h1>

<!-- hand written end-->

<!-- nav end-->
<!-- main start -->
<div class="container">
  <header class="intro">
    <div class="panel">
      <img class="panel-image" src="https://forallthetime.com/CHAIR/IMAGES/SANY0432-300x225.jpg" alt="chair">
      <p>Welcome to Buck Island, a premiere family vacation destination community on the Outer Banks of North
        Carolina!

        Explore our community on these pages. We take great pride in our homes and community and welcome you to
        experience them. We are conveniently located near Corolla shopping and entertainment areas. We have
        sidewalks, light posts, numerous amenities and a wonderful beach area and with excellent services. You can
        arrive, park the car for a week, and have everything you need close by, for a perfect vacation!

        We hope after exploring what Buck Island offers, you’ll agree that we are your family vacation destination.
        See you soon!</p>
    </div>
  </header>
</div>
!

CSS 

              
                /* index .css below */

:root {
  --color-light-blue: rgba(153, 176, 233, 1);
  --color-dark-blue: rgba(0, 151, 255, 1);
}

/* generic styles ----------------------------------- */
body {
  margin: 0;
  font-family: "Raleway", sans-serif;
  background: linear-gradient(
    45deg,
    rgba(153, 176, 233, 1) 35%,
    rgba(0, 151, 255, 1) 72%
  );
  min-height: 100vh;
}

header {
  padding: 10px;
}

h2 {
  font-size: 2em;
  margin-bottom: 1em;
}

p {
  margin-bottom: 1em;
}

figure {
  margin: 0;
  padding: 10px;
}

.figure-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.info {
  padding: 40px;
  background-color: #547240;
  color: white;
}

.info-link {
  text-decoration: none;
  color: #ff9900;
}

/* grid styles ------------------------------------ */
.main {
  display: grid;
}

@media (min-width: 600px) {
  .main {
    grid-template-columns: repeat(6, 1fr);
  }

  .info--1 {
    grid-column: span 2;
    grid-row: span 2;
  }

  .info--2 {
    grid-column: span 2;
  }

  .figure1 {
    grid-column: span 3;
    grid-row: span 2;
  }
}

h1 {
  margin: 0.5em 0 0.5em;
  text-align: center;
  font-size: 4rem;
  line-height: 1.2;
}
#container {
  margin: 0 auto;
  max-width: 890px;
}

.toggle,
[id^="drop"] {
  display: none;
}

.logo {
  display: flex;
  justify-content: space-between;
  padding: 0 30px;
  color: white;
  font-size: 30px;
  font-family: "Playball", cursive;
  font-weight: 400;
  font-style: normal;
  margin-right: 10vw;
}
nav {
  display: flex;
  justify-content: end;
  background-color: #514fdb;
  font-size: 26px;
  font-family: "Lemon", serif;
  font-weight: 400;
  font-style: normal;
}
/* nav begin */
.menu {
  display: flex;
  align-items: center;
  flex: 1 0 0;
  justify-content: space-between;
  padding: 0 1rem 0 0;
  margin: 0;
  list-style: none;
  position: relative;
}

.menu a {
  display: block;
  padding: 5px;
  color: #fff;
  font-size: 1.1rem;
  line-height: 3;
  text-decoration: none;
}
.menu a:hover {
  background-color: #1417e6;
}

/* Media Queries
--------------------------------------------- */

@media screen and (max-width: 1495px) {
  .menu a {
    font-size: 0.9rem;
  }
}

@media screen and (max-width: 1200px) {
  .menu a span {
    display: none;
  }
}

@media all and (max-width: 800px) {
  nav a:hover {
    background-color: #1417e6;
  }
  nav {
    margin: 0;
  }
  .toggle + a,
  .menu {
    display: none;
  }

  .toggle {
    display: block;
    background-color: #3633cc;
    padding: 0 20px;
    color: #fff;
    font-size: 22px;
    font-weight: bold;
    line-height: 60px;
    text-decoration: none;
    border: none;
  }

  .toggle:hover {
    background-color: #3633cc;
  }

  [id^="drop"]:checked + ul {
    display: block;
  }

  nav ul li {
    display: block;
    width: 100%;
  }

  nav ul ul .toggle,
  nav ul ul a {
    padding: 0 40px;
  }

  nav ul ul ul a {
    padding: 0 80px;
  }

  nav a:hover,
  nav ul ul ul a {
    background-color: #3633cc;
  }

  nav ul li ul li .toggle,
  nav ul ul a {
    background-color: #547240;
  }

  nav ul ul {
    float: none;
    position: static;
    color: #ffffff;
  }

  nav ul ul li:hover > ul,
  nav ul li:hover > ul {
    display: none;
  }

  nav ul ul li {
    display: block;
    width: 100%;
  }

  nav ul ul ul li {
    position: static;
  }
}

@media all and (max-width: 1393px) {
  nav ul li {
  }
}
/* nev end */

/** main start **/

/*

Forum question answer only : 

https://www.sitepoint.com/community/t/wonky-vs-code-and-codepen/436461/4*/

h1 {
  font-family: "Dancing Script", cursive;
  font-size: clamp(2rem, 10vw, 6rem);
  color: white;
}

html {
  box-sizing: border-box;
}
*,
*:before,
*:after {
  box-sizing: inherit;
}
html,
body {
  padding: 0;
  margin: 0;
}

.intro {
  display: flex;
  position: relative;
  background-size: cover;
  background-position: 50%;
  padding: 1rem;
}
.panel {
  padding: 1rem;
  max-width: 1fr;
  margin: auto;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 2vw;
  box-shadow: 0px 5px 10px #cf77f3, 0px 5px 10px #009bff, 0px 5px 10px #2ac9db;
  border: 1px solid silver;
}

.intro h1 {
  margin: 0.8rem 1rem;
  font-size: clamp(2rem, 10vw, 4rem);
  color: white;
  text-align: center;
  text-shadow: 9px 1px rgba(0, 0, 0, 0.8);
}
p {
  font-size: clamp(1.5rem, 3vw, 3rem);
  margin: 0.8rem 1rem;
  text-shadow: 1px 1px rgba(0, 0, 0, 0.8);
  color: white;
}

@media screen and (max-width: 800px) {
  .panel {
    background: rgba(0, 0, 0, 0.1);
  }
}

.panel-image {
  max-width: 450px;
  min-width: 200px;
  width: 50%;
  height: auto;
  margin: 0 10px 10px 0;
  float: left;
}
!

JS 

              
                /*

Sitepoint forum answer only:

https://www.sitepoint.com/community/t/break-point-issues/437744/8

Re: original :
https://forallthetime.com/CHAIR/index.html


*/
!
999px

Console