Question

我需要引导程序的帮助。我是 Bootstrap 的初学者。我决定为我的博客使用模板。我可以自定义很多东西，但我被标题导航卡住了。当我滚动页面时，粘性导航栏会移动，菜单无法正常显示。如果有人有任何建议？

链接到我正在使用的模板

链接到我的博客：

我不得不提一下，我有 2 个 .css（1 个缩小）。

初始 CSS 代码：

#mainNav {


position: absolute;
  border-bottom: 1px solid #e9ecef;
  background-color: white;
  font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

#mainNav .navbar-brand img {
    height: 6rem;
    padding: 10px;
    
}

#mainNav .navbar-brand {
  font-weight: 800;
  color: #343a40;
}

#mainNav .navbar-toggler {
  font-size: 12px;
  font-weight: 800;
  padding: 13px;
  text-transform: uppercase;
  color: #343a40;
}

#mainNav .navbar-nav > li.nav-item > a {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}

@media only screen and (min-width: 992px) {
  #mainNav {
    border-bottom: 1px solid transparent;
    background: transparent;
  }
  #mainNav .navbar-brand {
    padding: 10px 20px;
    color: #fff;
  }
  #mainNav .navbar-brand:focus, #mainNav .navbar-brand:hover {
    color: rgba(255, 255, 255, 0.8);
  }
  #mainNav .navbar-nav > li.nav-item > a {
    padding: 10px 20px;
    color: #fff;
  }
  #mainNav .navbar-nav > li.nav-item > a:focus, #mainNav .navbar-nav > li.nav-item > a:hover {
    color: rgba(255, 255, 255, 0.8);
  }
}

@media only screen and (min-width: 992px) {
  #mainNav {
    transition: background-color 0.2s;
    /* Force Hardware Acceleration in WebKit */
    transform: translate3d(0, 0, 0);
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
  }
  #mainNav.is-fixed {
    /* when the user scrolls down, we hide the header right above the viewport */
    position: fixed;
    top: -67px;
    transition: transform 0.2s;
    border-bottom: 1px solid white;
    background-color: rgba(255, 255, 255, 0.9);
  }
  #mainNav.is-fixed .navbar-brand {
    color: #212529;
  }
  #mainNav.is-fixed .navbar-brand:focus, #mainNav.is-fixed .navbar-brand:hover {
    color: #0085A1;
  }
  #mainNav.is-fixed .navbar-nav > li.nav-item > a {
    color: #212529;
  }
  #mainNav.is-fixed .navbar-nav > li.nav-item > a:focus, #mainNav.is-fixed .navbar-nav > li.nav-item > a:hover {
    color: #0085A1;
  }
  #mainNav.is-visible {
    /* if the user changes the scrolling direction, we show the header */
    transform: translate3d(0, 100%, 0);
  }
}

header.masthead {
  margin-bottom: 50px;
  background: no-repeat center center;
  background-color: #868e96;
  background-attachment: scroll;
  position: relative;
  background-size: cover;
}

header.masthead .overlay {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-color: #212529;
  opacity: 0.5;
}

header.masthead .page-heading,
header.masthead .post-heading,
header.masthead .site-heading {
  padding: 200px 0 150px;
  color: white;
}

@media only screen and (min-width: 768px) {
  header.masthead .page-heading,
  header.masthead .post-heading,
  header.masthead .site-heading {
    padding: 200px 0;
  }
}

header.masthead .page-heading,
header.masthead .site-heading {
  text-align: center;
}

header.masthead .page-heading h1,
header.masthead .site-heading h1 {
  font-size: 50px;
  margin-top: 0;
}

Answer 1

修复

#mainNav.is-fixed {
/* when the user scrolls down, we hide the header right above the viewport */
position: fixed;
top: -137px;
transition: transform 0.2s;
border-bottom: 1px solid white;
background-color: rgba(255, 255, 255, 0.9);

}

引导导航栏滚动问题

1 个答案: