Materialize CSS transparent navbar

Question

I have trouble making my navbar transparent. Instead what shows is a white background. I have even tried editing the materialize css source files and adding the class 'transparent' and nothing changes. Does anyone have a work around for this?

<div class="navbar-fixed transparent">
<nav class="transparent">
    <div class="nav-wrapper transparent">
        <a href="#" class="brand-logo center">KAYWA</a>
        <a href="#" data-activates="mobile-demo" class="button-collapse" id="btncollapse">
            &#9776;
        </a>
        <ul class="left hide-on-med-and-down transparent">
            <li><a href="#" class="link">HOME</a></li>
            <li><a href="#" class="link">ABOUT US</a></li>
            <li><a href="#" class="link">SOCIAL MEDIA</a></li>
            <li><a href="#" class="link">CONTACT US</a></li>
        </ul>
        <ul class="right hide-on-med-and-down transparent">
            <li><a href="#" class="link"><i class="fa fa-instagram fa-2x"></i></a></li>
            <li><a href="#" class="link"><i class="fa fa-facebook fa-2x"></i></a></li>
            <li><a href="#" class="link"><i class="fa fa-twitter fa-2x"></i></a></li>
            <li><a href="#" class="link"><i class="fa fa-google-plus fa-2x"></i></a></li>
        </ul>
        <ul class="side-nav" id="mobile-demo">
            <li><a href="#">HOME</a></li>
            <li><a href="#">ABOUT US</a></li>
            <li><a href="#">SOCIAL MEDIA</a></li>
            <li><a href="#">CONTACT US</a></li>
            <li><a href="#"><i class="fa fa-instagram fa-2x"></i></a></li>
            <li><a href="#"><i class="fa fa-facebook fa-2x"></i></a></li>
            <li><a href="#"><i class="fa fa-twitter fa-2x"></i></a></li>
            <li><a href="#"><i class="fa fa-google-plus fa-2x"></i></a></li>
        </ul>
    </div>
</nav>

Answer 1

I used a simple CSS solution that should work:

.transparentBG {
  background-color: rgba(0,0,0,0);
}

Then you put this class in the nav tag, after the div that makes navbar fixed, no need to replicate in your entire code.

Answer 2

将元素的背景颜色设置为透明会继承容器的背景颜色，默认情况下为白色。

Answer 3

.z-depth-1, 
nav, 
.card-panel, 
.card, 
.toast, 
.btn, 
.btn-large, 
.btn-small, 
.btn-floating, 
.dropdown-content, 
.collapsible, 
.sidenav {
    -webkit-box-shadow: 0 2px 2px 0 rgba(0,0,0,0), 0 3px 1px -2px rgba(0,0,0,0), 0 1px 5px 0 rgba(0,0,0,0);
    box-shadow: 0 2px 2px 0 rgba(0,0,0,0), 0 3px 1px -2px rgba(0,0,0,0), 0 1px 5px 0 rgba(0,0,0,0);
}

paste this in a css file and it should work!