主体中的容器重叠了我的侧面导航

Question

这是我的侧面导航代码

<style>
    /* The side navigation menu */
    .sidenav {
        height: 50%; /* 100% Full-height */
        width: 0; /* 0 width - change this with JavaScript */
        position: fixed; /* Stay in place */
        z-index: 50; /* Stay on top */
        top: 0;
        right: 0;
        background-color: #111; /* Black*/
        overflow-x: hidden; /* Disable horizontal scroll */
        padding-top: 60px; /* Place content 60px from the top */
        transition: 0.5s; /* 0.5 second transition effect to slide in the sidenav */
    }

    /* The navigation menu links */
    .sidenav a {
        padding: 8px 8px 8px 32px;
        text-decoration: none;
        font-size: 12px;
        color: #818181;
        display: block; 
        transition: 0.3s
    }

    /* When you mouse over the navigation links, change their color */
    .sidenav a:hover, .offcanvas a:focus{
        color: #f1f1f1;
        background:#3797dd;
    }

    /* Position and style the close button (top right corner) */
    .sidenav .closebtn {
     top:0;
     right:25px;
     padding: 8px 8px 8px 32px;
     text-decoration: none;
     font-size: 12px;
     color: #818181;
     display: block;
     transition: 0.3s
   /* position: absolute;
    top: 0;
    right: 25px;
    font-size: 36px;
    margin-left: 50px;*/
}
/* Style page content - use this if you want to push the page content to the right when you open the side navigation */
#main {
    transition: margin-left .5s;
    padding: 20px;
}

/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */
@media  screen and (max-height: 450px) {
    .sidenav {padding-top: 15px;}
    .sidenav a {font-size: 18px;}
}   
</style>

检查www.dev.zulwa.com

Answer 1

将其添加到您的CSS：

.navbar {z-index : 99999 }

Answer 2

这是我的HTML代码

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      <a style="height: 40px; margin-top: -15px;"><span style="font-size:13px; cursor:pointer" onclick="openNav()"><span>&#9776;</span> </span></a>
      <script>
        function openNav() {
          document.getElementById("mySidenav").style.width = "250px";
        }
        function closeNav() {
          document.getElementById("mySidenav").style.width = "0";
        }
        function openNav() {
          document.getElementById("mySidenav").style.width = "250px";
          document.body.style.backgroundColor = "rgba(0,0,0,0.8)";
        }
        /* Set the width of the side navigation to 0 */
        function closeNav() {
          document.getElementById("mySidenav").style.width = "0";
          document.body.style.backgroundColor = "white";
        }
      </script>
    </li>