「CSS」の全画面ポップアップメニューをポップアップする方法

Intro

How to Full screen

Step 1) Add HTML

<div id="myNav" class="overlay">
  <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">&times;</a>
  <div class="overlay-content">
    <a href="#">팝업 내용</a>
  </div>
</div>

<h2>Fullscreen Overlay Example</h2>
<p>This is an example of a pop-up full screen</p>
<button style="font-size:30px;cursor:pointer" onclick="openNav()">fullscreen open button</button>

Step 2) Add CSS

.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;
}

.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;
  }
}

Step 3) Add JavaScript

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

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

Step 4) Run

デフォルトの画面

ボタンをクリックすると、ポップアップボタンが全画面になることを確認できます.