html - 如何使这些图标不出现在导航栏的顶部？

Question

我有一排三个图标。我想做的是让图标行从粘贴在网页顶部的导航栏下方通过。

当这行图标即将通过导航栏时，i 出现在顶部。

我想要实现的是让图标行在导航栏下方通过。

HTML

<section class="sub-banner row-fluid pad-top-extra pad-bottom-extra hidden-sm">
       <div class="container main">

         <ul class="ch-grid">
          <li>
            <div class="ch-item">       
              <div class="ch-info">
                <div class="ch-info-front ch-img-1"></div>
                <div class="ch-info-back">
                  <h3>Rest</h3>
                  <p>Everybody needs rest, and so do I.</p>
                </div>  
              </div>
            </div>
          </li>
          <li>
            <div class="ch-item">
              <div class="ch-info">
                <div class="ch-info-front ch-img-2"></div>
                <div class="ch-info-back">
                  <h3>Gym</h3>
                  <p>Enough rest = Power to Lift!</p>
                </div>
              </div>
            </div>
          </li>
          <li>
            <div class="ch-item">
              <div class="ch-info">
                <div class="ch-info-front ch-img-3"></div>
                <div class="ch-info-back">
                  <h3>Code</h3>
                  <p>"Go back to reality"</p>
                </div>
              </div>
            </div>
          </li>
        </ul>


        </div>
      </section>

CSS

.ch-grid {
    margin: 20px 0 0 0;
    padding: 0;
    list-style: none;
    display: block;
    text-align: center;
    width: 100%;

}

.ch-grid:after,
.ch-item:before {
    content: '';
    display: table;
}

.ch-grid:after {
    clear: both;
}

.ch-grid li {
    width: 300px;
    height: 300px;
    display: inline-block;
    margin: 20px;
}


.ch-item {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    position: relative;
    cursor: default;
    -webkit-perspective: 900px;
    -moz-perspective: 900px;
    -o-perspective: 900px;
    -ms-perspective: 900px;
    perspective: 900px;
}
.ch-info{
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    -o-transform-style: preserve-3d;
    -ms-transform-style: preserve-3d;
    transform-style: preserve-3d;
}
.ch-info > div {
    display: block;
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-position: center center;
    -webkit-transition: all 0.4s linear;
    -moz-transition: all 0.4s linear;
    -o-transition: all 0.4s linear;
    -ms-transition: all 0.4s linear;
    transition: all 0.4s linear;
    -webkit-transform-origin: 50% 0%;
    -moz-transform-origin: 50% 0%;
    -o-transform-origin: 50% 0%;
    -ms-transform-origin: 50% 0%;
    transform-origin: 50% 0%;
}

.ch-info .ch-info-front {
    box-shadow: inset 0 0 0 16px rgba(0,0,0,0.3);
}

.ch-info .ch-info-back {
    -webkit-transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
    -moz-transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
    -o-transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
    -ms-transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
    transform: translate3d(0,0,-220px) rotate3d(1,0,0,90deg);
    background: #000;
    opacity: 0;
}

.ch-img-1 { 
    background-image: url(../css/deb2.png);


}

.ch-img-2 { 
    background-image: url(../css/gymicon.png);

}

.ch-img-3 { 
    background-image: url(../css/syntax.png);

}

.ch-info h3 {
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 24px;
    margin: 0 15px;
    padding: 60px 0 0 0;
    height: 110px;
    font-family: 'Open Sans', Arial, sans-serif;
    text-shadow: 
        0 0 1px #fff, 
        0 1px 2px rgba(0,0,0,0.3);
}

.ch-info p {
    color: #fff;
    padding: 10px 5px;
    font-style: italic;
    margin: 0 30px;
    font-size: 16px;
    border-top: 1px solid rgba(255,255,255,0.5);
}

.ch-info p a {
    display: block;
    color: #fff;
    color: rgba(255,255,255,0.7);
    font-style: normal;
    font-weight: 700;
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 1px;
    padding-top: 4px;
    font-family:"Open_Sans_R";
}

.ch-info p a:hover {
    color: #fff222;
    color: rgba(239,65,53, 0.8);
}

.ch-item:hover .ch-info-front {
    -webkit-transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
    -moz-transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
    -o-transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
    -ms-transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
    transform: translate3d(0,280px,0) rotate3d(1,0,0,-90deg);
    opacity: 0;
}

.ch-item:hover .ch-info-back {
    -webkit-transform: rotate3d(1,0,0,0deg);
    -moz-transform: rotate3d(1,0,0,0deg);
    -o-transform: rotate3d(1,0,0,0deg);
    -ms-transform: rotate3d(1,0,0,0deg);
    transform: rotate3d(1,0,0,0deg);
    opacity: 1;
}

Answer 1

由于您没有发布包含粘条的代码版本，我唯一能想到的情况是 z-index 值。

对于一个简单的测试，将 z-index: 1000; 设置为粘滞条，并将 z-index: 1; 设置为应隐藏在其下方的图标。