固定了打开菜单的底部div

Question

I'm trying to set the DIV with the class="overlay-bottom" to the bottom of the screen when opening the menu. However, it is showing up even before the menu opens. How do I go about this?

 function openNav() { document.getElementById("myNav").style.width = "100%"; } function closeNav() { document.getElementById("myNav").style.width = "0%"; } 

 .overlay { height: 100%; width: 0; position: fixed; z-index: 1; top: 0; left: 0; background-color: rgb(0,0,0); background-color: rgba(0,0,0, 0.9); overflow-x: hidden; transition: 0.5s; } .overlay-content { position: relative; top: 25%; width: 100%; text-align: center; margin-top: 30px; } .overlay a { padding: 8px; text-decoration: none; font-size: 36px; color: #818181; display: block; transition: 0.3s; } .overlay a:hover, .overlay a:focus { color: #f1f1f1; } .overlay .closebtn { position: absolute; top: 20px; right: 45px; font-size: 60px; } @media screen and (max-height: 450px) { .overlay a {font-size: 20px} .overlay .closebtn { font-size: 40px; top: 15px; right: 35px; } } .overlay-bottom { position: fixed; bottom: 0; background-color: #e22727; width: 100%; color: #fff; } 

 <div id="myNav" class="overlay"> <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">&times;</a> <div class="overlay-content"> <a href="#">About</a> <a href="#">Services</a> <a href="#">Clients</a> <a href="#">Contact</a> </div> <div class="overlay-bottom"> Bottom </div> </div> <span style="font-size:30px;cursor:pointer" onclick="openNav()">&#9776; open</span> 

Answer 1

this is what you're looking for, right?

 function openNav() { document.getElementById("myNav").style.width = "100%"; document.getElementsByClassName("overlay-bottom")[0].style.visibility = "visible"; } function closeNav() { document.getElementById("myNav").style.width = "0%"; document.getElementsByClassName("overlay-bottom")[0].style.visibility = "hidden"; } 

 .overlay { height: 100%; width: 0; position: fixed; z-index: 1; top: 0; left: 0; background-color: rgb(0, 0, 0); background-color: rgba(0, 0, 0, 0.9); overflow-x: hidden; transition: 0.5s; } .overlay-content { position: relative; top: 25%; width: 100%; text-align: center; margin-top: 30px; } .overlay a { padding: 8px; text-decoration: none; font-size: 36px; color: #818181; display: block; transition: 0.3s; } .overlay a:hover, .overlay a:focus { color: #f1f1f1; } .overlay .closebtn { position: absolute; top: 20px; right: 45px; font-size: 60px; } @media screen and (max-height: 450px) { .overlay a { font-size: 20px } .overlay .closebtn { font-size: 40px; top: 15px; right: 35px; } } .overlay-bottom { position: fixed; bottom: 0; background-color: #e22727; width: 100%; color: #fff; visibility: hidden; } 

 <div id="myNav" class="overlay"> <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">&times;</a> <div class="overlay-content"> <a href="#">About</a> <a href="#">Services</a> <a href="#">Clients</a> <a href="#">Contact</a> </div> </div> <div class="overlay-bottom"> Bottom </div> <span style="font-size:30px;cursor:pointer" onclick="openNav()">&#9776; open</span>