2023年5月30日 05:49:23go评论52阅读模式

英文:

Trying to add background image in html and css behind the nav bar so space doesn't show when scrolling

问题

你可以尝试在CSS中的.navbar和.footer样式中添加以下属性来移除顶部和底部的空白空间：

.navbar {
  margin-top: 0;
  margin-bottom: 0;
}

.footer {
  margin-top: 0;
  margin-bottom: 0;
}

这将移除导航栏和页脚的上下外边距，从而减少滚动时的空白空间。希望这对你有所帮助！

英文:

I can't figure out how to make the background image in my html and css to fill under the navbar and footer. When I scroll the space of the navbar is just a white space, I want it to scroll without space at the top and bottom. Thanks!

* {
  box-sizing: border-box;
}
  body, html {
  margin: 0 auto;
  padding: 0;
}

.background-container {
  background-image: url(&quot;http://placekitten.com/g/500/500&quot;);
  background-size: cover;
  background-position: center;
  position: fixed;
  width: 100%;
  height: 100%;
  opacity: 0.5;
  z-index: -1;
  background-repeat: no-repeat;
}


.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 30%; /* Adjust the height as needed */
}

.logo-container img{
  max-width: auto;
  max-height: 600px;
  text-align: center;


}

@media screen and (max-width: 768px) {
  /* Adjust background image for mobile devices */
  .background-container {
    background-position: center;
    height: auto;
  }
}

.footer {
  padding: 25px 0;
  background-color: #f2f2f2;
  bottom: 0;
  width: 100%;
}
.navbar {
  margin-bottom: 0;
  border-radius: 0;
  margin: 0;
  padding: 0;
  width: 100%;
  overflow: auto;
}


@media (max-width: 768px) {
  .logo-container {
    margin-top: 50px;
  }


  .footer {
    position: relative;
  }
  .navbar {
      position: relative;
}

&lt;script src=&quot;https://ajax.googleapis.com/ajax/libs/jquery/3.6.4/jquery.min.js&quot;&gt;&lt;/script&gt;
&lt;script src=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;
&lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css&quot;&gt;

&lt;nav class=&quot;navbar navbar-expand-sm navbar-light bg-light&quot;&gt;
  &lt;a class=&quot;navbar-brand&quot; href=&quot;#&quot;&gt;The Backyard&lt;/a&gt;
  &lt;button class=&quot;navbar-toggler&quot; type=&quot;button&quot; data-toggle=&quot;collapse&quot; data-target=&quot;#navbarNav&quot; aria-controls=&quot;navbarNav&quot; aria-expanded=&quot;false&quot; aria-label=&quot;Toggle navigation&quot;&gt;
    &lt;span class=&quot;navbar-toggler-icon&quot;&gt;&lt;/span&gt;
  &lt;/button&gt;
  &lt;div class=&quot;collapse navbar-collapse&quot; id=&quot;navbarNav&quot;&gt;
    &lt;ul class=&quot;navbar-nav ml-auto&quot;&gt;
      &lt;li class=&quot;nav-item active&quot;&gt;
        &lt;a class=&quot;nav-link&quot; href=&quot;#home&quot;&gt;Home&lt;/a&gt;
      &lt;/li&gt;
      &lt;li class=&quot;nav-item&quot;&gt;
        &lt;a class=&quot;nav-link&quot; href=&quot;#about&quot;&gt;About&lt;/a&gt;
      &lt;/li&gt;
      &lt;li class=&quot;nav-item&quot;&gt;
        &lt;a class=&quot;nav-link&quot; href=&quot;#events&quot;&gt;Events&lt;/a&gt;
      &lt;/li&gt;
      &lt;li class=&quot;nav-item&quot;&gt;
        &lt;a class=&quot;nav-link&quot; href=&quot;#contact&quot;&gt;Contact&lt;/a&gt;
      &lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;
&lt;/nav&gt;

&lt;div class=&quot;background-container&quot;&gt;&lt;/div&gt;
  &lt;div class=&quot;logo-container&quot;&gt;
    &lt;img src=&quot;http://placekitten.com/g/100/100&quot; alt=&quot;Logo&quot;&gt;
    &lt;/div&gt;

&lt;footer class=&quot;footer&quot;&gt;
  &lt;div class=&quot;container&quot;&gt;
    &lt;p&gt;The Backyard&lt;br&gt;
      at Boca Fiesta &amp; Palomino&lt;br&gt;
      232 1/2 SE 1st st.&lt;br&gt;
      Gainesville, FL 32601&lt;/p&gt;
  &lt;/div&gt;
&lt;/footer&gt;

I've tried to change the code on both css and html but nothing seems to be changing the result.

答案1

得分: 0

我不确定为什么您创建了一个新元素来放置背景图像，而不是直接放在<body>标签上，但您的问题是因为在小屏幕尺寸上，您在.background-container元素上设置了height:auto。

您已经创建了一个元素，将其固定位置并使其高度和宽度都为100%。当屏幕尺寸较小时，您设置height:auto，现在该元素的高度为0px，因为里面没有任何内容。

此外，您同时引入了Bootstrap 4的CSS和Bootstrap 3的JS - 这毫无意义。请选择其中一个版本，不能混用这两个版本！

英文:

I'm not sure why you have created a new element that you are putting the BG image on instead of just putting it on the <body> tag, but your problem is because at small screen sizes you are setting height:auto on the .background-container element.

You have created an element, made it fixed position and then made it 100% tall, 100% wide. When the screen size is small and you set height:auto now that element has a height of 0px since there's nothing inside that element.

* {
  box-sizing: border-box;
}
  body, html {
  margin: 0 auto;
  padding: 0;
}

.background-container {
  background-image: url(&quot;http://placekitten.com/g/500/500&quot;);
  background-size: cover;
  background-position: center;
  position: fixed;
  width: 100%;
  height: 100%;
  opacity: 0.5;
  z-index: -1;
  background-repeat: no-repeat;
}


.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 30%; /* Adjust the height as needed */
}

.logo-container img{
  max-width: auto;
  max-height: 600px;
  text-align: center;


}

@media screen and (max-width: 768px) {
  /* Adjust background image for mobile devices */
  .background-container {
    background-position: center;
    /*height: auto;*/    /* &lt;=======  REMOVE THIS */
  }
}

.footer {
  padding: 25px 0;
  background-color: #f2f2f2;
  bottom: 0;
  width: 100%;
}
.navbar {
  margin-bottom: 0;
  border-radius: 0;
  margin: 0;
  padding: 0;
  width: 100%;
  overflow: auto;
}


@media (max-width: 768px) {
  .logo-container {
    margin-top: 50px;
  }


  .footer {
    position: relative;
  }
  .navbar {
      position: relative;
}

&lt;script src=&quot;https://ajax.googleapis.com/ajax/libs/jquery/3.6.4/jquery.min.js&quot;&gt;&lt;/script&gt;
&lt;script src=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;
&lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css&quot;&gt;

&lt;nav class=&quot;navbar navbar-expand-sm navbar-light bg-light&quot;&gt;
  &lt;a class=&quot;navbar-brand&quot; href=&quot;#&quot;&gt;The Backyard&lt;/a&gt;
  &lt;button class=&quot;navbar-toggler&quot; type=&quot;button&quot; data-toggle=&quot;collapse&quot; data-target=&quot;#navbarNav&quot; aria-controls=&quot;navbarNav&quot; aria-expanded=&quot;false&quot; aria-label=&quot;Toggle navigation&quot;&gt;
    &lt;span class=&quot;navbar-toggler-icon&quot;&gt;&lt;/span&gt;
  &lt;/button&gt;
  &lt;div class=&quot;collapse navbar-collapse&quot; id=&quot;navbarNav&quot;&gt;
    &lt;ul class=&quot;navbar-nav ml-auto&quot;&gt;
      &lt;li class=&quot;nav-item active&quot;&gt;
        &lt;a class=&quot;nav-link&quot; href=&quot;#home&quot;&gt;Home&lt;/a&gt;
      &lt;/li&gt;
      &lt;li class=&quot;nav-item&quot;&gt;
        &lt;a class=&quot;nav-link&quot; href=&quot;#about&quot;&gt;About&lt;/a&gt;
      &lt;/li&gt;
      &lt;li class=&quot;nav-item&quot;&gt;
        &lt;a class=&quot;nav-link&quot; href=&quot;#events&quot;&gt;Events&lt;/a&gt;
      &lt;/li&gt;
      &lt;li class=&quot;nav-item&quot;&gt;
        &lt;a class=&quot;nav-link&quot; href=&quot;#contact&quot;&gt;Contact&lt;/a&gt;
      &lt;/li&gt;
    &lt;/ul&gt;
  &lt;/div&gt;
&lt;/nav&gt;

&lt;div class=&quot;background-container&quot;&gt;&lt;/div&gt;
  &lt;div class=&quot;logo-container&quot;&gt;
    &lt;img src=&quot;http://placekitten.com/g/100/100&quot; alt=&quot;Logo&quot;&gt;
    &lt;/div&gt;

&lt;footer class=&quot;footer&quot;&gt;
  &lt;div class=&quot;container&quot;&gt;
    &lt;p&gt;The Backyard&lt;br&gt;
      at Boca Fiesta &amp; Palomino&lt;br&gt;
      232 1/2 SE 1st st.&lt;br&gt;
      Gainesville, FL 32601&lt;/p&gt;
  &lt;/div&gt;
&lt;/footer&gt;

Also you are including Bootstrap 4 CSS and Bootstrap 3 JS - this makes no sense at all. Pick one of the other, you can't mix versions like this!

答案2

得分: 0

我建议在您的问题评论中将背景图应用于body，但我想不出如何以这种方式应用不透明度。所以，只需将<div class="background-container"></div>移到页面顶部。

* {
  box-sizing: border-box;
}

body, html {
  margin: 0 auto;
  padding: 0;
}

.background-container {
  background-image: url("http://placekitten.com/g/500/500");
  background-size: cover;
  background-position: center;
  position: fixed;
  width: 100%;
  height: 100%;
  opacity: 0.5;
  z-index: -1;
  background-repeat: no-repeat;
}

.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 30%; /* 根据需要调整高度 */
}

.logo-container img {
  max-width: auto;
  max-height: 600px;
  text-align: center;
}

@media screen and (max-width: 768px) {
  /* 调整移动设备的背景图像 */
  .background-container {
    background-position: center;
    height: auto;
  }
}

.footer {
  padding: 25px 0;
  background-color: #f2f2f2;
  bottom: 0;
  width: 100%;
}

.navbar {
  margin-bottom: 0;
  border-radius: 0;
  margin: 0;
  padding: 0;
  width: 100%;
  overflow: auto;
}

@media (max-width: 768px) {
  .logo-container {
    margin-top: 50px;
  }

  .footer {
    position: relative;
  }

  .navbar {
    position: relative;
  }
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.4/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css">

<div class="background-container"></div>

<nav class="navbar navbar-expand-sm navbar-light bg-light">
  <a class="navbar-brand" href="#">The Backyard</a>
  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <div class="collapse navbar-collapse" id="navbarNav">
    <ul class="navbar-nav ml-auto">
      <li class="nav-item active">
        <a class="nav-link" href="#home">Home</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#about">About</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#events">Events</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" href="#contact">Contact</a>
      </li>
    </ul>
  </div>
</nav>

<div class="logo-container">
  <img src="http://placekitten.com/g/100/100" alt="Logo">
</div>

<footer class="footer">
  <div class="container">
    <p>The Backyard<br>
      at Boca Fiesta & Palomino<br>
      232 1/2 SE 1st st.<br>
      Gainesville, FL 32601</p>
  </div>
</footer>

英文:

I suggested in a comment on your question to apply the background image to body, but I can't think of how you would apply opacity in that manner. So, just move <div class="background-container"></div> to the top of the page.

* {
  box-sizing: border-box;
}
  body, html {
  margin: 0 auto;
  padding: 0;
}

.background-container {
  background-image: url(&quot;http://placekitten.com/g/500/500&quot;);
  background-size: cover;
  background-position: center;
  position: fixed;
  width: 100%;
  height: 100%;
  opacity: 0.5;
  z-index: -1;
  background-repeat: no-repeat;
}


.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 30%; /* Adjust the height as needed */
}

.logo-container img{
  max-width: auto;
  max-height: 600px;
  text-align: center;


}

@media screen and (max-width: 768px) {
  /* Adjust background image for mobile devices */
  .background-container {
    background-position: center;
    height: auto;
  }
}

.footer {
  padding: 25px 0;
  background-color: #f2f2f2;
  bottom: 0;
  width: 100%;
}
.navbar {
  margin-bottom: 0;
  border-radius: 0;
  margin: 0;
  padding: 0;
  width: 100%;
  overflow: auto;
}


@media (max-width: 768px) {
  .logo-container {
    margin-top: 50px;
  }


  .footer {
    position: relative;
  }
  .navbar {
      position: relative;
}

&lt;script src=&quot;https://ajax.googleapis.com/ajax/libs/jquery/3.6.4/jquery.min.js&quot;&gt;&lt;/script&gt;
&lt;script src=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js&quot;&gt;&lt;/script&gt;
&lt;link rel=&quot;stylesheet&quot; href=&quot;https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css&quot;&gt;
&lt;div class=&quot;background-container&quot;&gt;&lt;/div&gt;
&lt;nav class=&quot;navbar navbar-expand-sm navbar-light bg-light&quot;&gt;
&lt;a class=&quot;navbar-brand&quot; href=&quot;#&quot;&gt;The Backyard&lt;/a&gt;
&lt;button class=&quot;navbar-toggler&quot; type=&quot;button&quot; data-toggle=&quot;collapse&quot; data-target=&quot;#navbarNav&quot; aria-controls=&quot;navbarNav&quot; aria-expanded=&quot;false&quot; aria-label=&quot;Toggle navigation&quot;&gt;
&lt;span class=&quot;navbar-toggler-icon&quot;&gt;&lt;/span&gt;
&lt;/button&gt;
&lt;div class=&quot;collapse navbar-collapse&quot; id=&quot;navbarNav&quot;&gt;
&lt;ul class=&quot;navbar-nav ml-auto&quot;&gt;
&lt;li class=&quot;nav-item active&quot;&gt;
&lt;a class=&quot;nav-link&quot; href=&quot;#home&quot;&gt;Home&lt;/a&gt;
&lt;/li&gt;
&lt;li class=&quot;nav-item&quot;&gt;
&lt;a class=&quot;nav-link&quot; href=&quot;#about&quot;&gt;About&lt;/a&gt;
&lt;/li&gt;
&lt;li class=&quot;nav-item&quot;&gt;
&lt;a class=&quot;nav-link&quot; href=&quot;#events&quot;&gt;Events&lt;/a&gt;
&lt;/li&gt;
&lt;li class=&quot;nav-item&quot;&gt;
&lt;a class=&quot;nav-link&quot; href=&quot;#contact&quot;&gt;Contact&lt;/a&gt;
&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;/nav&gt;
&lt;div class=&quot;logo-container&quot;&gt;
&lt;img src=&quot;http://placekitten.com/g/100/100&quot; alt=&quot;Logo&quot;&gt;
&lt;/div&gt;
&lt;footer class=&quot;footer&quot;&gt;
&lt;div class=&quot;container&quot;&gt;
&lt;p&gt;The Backyard&lt;br&gt;
at Boca Fiesta &amp; Palomino&lt;br&gt;
232 1/2 SE 1st st.&lt;br&gt;
Gainesville, FL 32601&lt;/p&gt;
&lt;/div&gt;
&lt;/footer&gt;

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Trying to add background image in html and css behind the nav bar so space doesn't show when scrolling

问题

答案1

答案2

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