title: Body content in HTML not full screen although set width 100% in CSS? when responsive
body: <p>In normal (not responsive yet) my website running good, but after I set responsive to (width: 1336px) for my web it's display screen like this although I've set width for this is 100%</p>
  
  <p><img src="https://i.stack.imgur.com/zr11l.png" alt="enter image description here"></p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>/* Here is my CSS *style.css* */
  
  * {
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Montserrat', sans-serif;
    margin: 0;
    width: 100%;
  }
  
  
  /* style for header section */
  
  h1 {
    line-height: 65px;
    font-size: 48px;
  }
  
  .header-container {
    background-image: linear-gradient( 0deg, rgba(35, 39, 49, -0.18), rgba(35, 39, 49, 1.82)), url("images/bg-image.jpeg");
    background-repeat: no-repeat;
    background-size: cover;
    box-sizing: border-box;
    position: absolute;
    width: 100%;
    height: 743px;
    left: -1px;
    top: 0px;
  }
  
  .nav-bar {
    position: absolute;
    width: 1700px;
    height: 135px;
    left: 69px;
    top: 17px;
    filter: brightness(100%);
  }
  
  .header-logo {
    float: left;
  }
  
  .nav-content {
    list-style-type: none;
  }
  
  .menu-section {
    width: 50%;
    float: right;
    margin-top: 34px;
  }
  
  .menu-item {
    float: left;
    display: block;
    margin-right: 70px;
  }
  
  
  /* nav menu */
  
  .nav-content li a {
    text-decoration: none;
    color: #fff;
    font-size: 20px;
  }
  
  .nav-content li a:hover {
    color: #00B9F7;
  }
  
  
  /* header title */
  
  .header-title {
    color: #fff;
    text-align: center;
    margin: auto;
    width: 30%;
    padding: 10px;
    margin-top: 10%;
  }
  
  
  /* header video */
  
  .header-video {
    margin-left: 30%;
    width: fit-content;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;!-- here is my HTML code *index.html* --&gt;
  
  &lt;header class="header-container"&gt;
    &lt;div class="header-content"&gt;
      &lt;div class="nav-bar"&gt;
        &lt;div class="header-logo"&gt;
          &lt;a href="#"&gt;
            &lt;img id="image-logo-header" class="bottom img-logo" src="images/logo.png"&gt;
          &lt;/a&gt;
        &lt;/div&gt;
  
        &lt;div class="menu-section"&gt;
          &lt;div class="menu-btn-group"&gt;
            &lt;div class="menu-toggle"&gt;&lt;/div&gt;
            &lt;div class="menu-close"&gt;&lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="navigation navbar-collapse "&gt;
            &lt;nav role="navigation"&gt;
              &lt;ul class="nav-content"&gt;
                &lt;li class="menu-item"&gt;&lt;a class="active-item" href="#"&gt;Home&lt;/a&gt;&lt;/li&gt;
                &lt;li class="menu-item"&gt;&lt;a href="#"&gt;Blog&lt;/a&gt;&lt;/li&gt;
                &lt;li class="menu-item"&gt;&lt;a href="#"&gt;About&lt;/a&gt;&lt;/li&gt;
                &lt;li class="menu-item"&gt;&lt;a href="#"&gt;Contact&lt;/a&gt;&lt;/li&gt;
                &lt;li class="menu-item"&gt;&lt;a href="#"&gt;Login&lt;/a&gt;&lt;/li&gt;
                &lt;li class="menu-item"&gt;&lt;a href="#"&gt;Sign up&lt;/a&gt;&lt;/li&gt;
              &lt;/ul&gt;
            &lt;/nav&gt;
          &lt;/div&gt;
        &lt;/div&gt;
      &lt;/div&gt;
  
      &lt;div class="header-title"&gt;
        &lt;h1&gt;SHARE YOUR HOLIDDAY DREAM&lt;/h1&gt;
      &lt;/div&gt;
  
      &lt;div class="header-video"&gt;
        &lt;img class="video-img" src="images/video-img.png"&gt;
      &lt;/div&gt;
    &lt;/div&gt;
  &lt;/header&gt;</code></pre>
  </div>
  </div>
  </p>
  
  <p>Can anyone help me, please? your answer is my happiness, thank you so much</p>