how to stop loading animation once the screen is loaded
<p><div class="snippet" data-lang="js" data-hide="false">
<div class="snippet-code">
<pre class="snippet-code-css lang-css prettyprint-override"><code>@import url(http://fonts.googleapis.com/css?family=Play:400,700);
* {
  box-sizing: border-box;
}

body {
  background-color: #222;
  font-family: "Play";
}

h1 {
  font-size: 2rem;
  color: #FFF;
  text-align: center;
  text-transform: uppercase;
}

.smart-glass {
  position: absolute;
  margin: auto;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  width: 288px;
  height: 388px;
}

.logo {
  width: 288px;
  height: 288px;
  position: relative;
}

.circle {
  padding: 20px;
  border: 6px solid transparent;
  border-top-color: #40A800;
  border-radius: 50%;
  width: 100%;
  height: 100%;
  animation: connect 2.5s linear infinite;
}

.xbox {
  background: #FFF;
  width: 80px;
  height: 80px;
  border-radius: 100%;
  overflow: hidden;
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  margin: auto;
}
.xbox:after, .xbox:before {
  content: "";
  display: block;
  border-top: 10px solid #222;
  border-radius: 50%;
  height: 90%;
  width: 120%;
  transform: rotate(-45deg);
  position: absolute;
  right: -30%;
  top: 15%;
}
.xbox:before {
  left: -30%;
  transform: rotate(45deg);
}

.loading-text {
  text-transform: uppercase;
  color: #FFF;
  text-align: center;
  margin: 10px 0;
  font-size: 1.4rem;
}

@keyframes connect {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(-360deg);
  }
}</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;div class="smart-glass"&gt;
  &lt;h1&gt;Xbox&lt;/h1&gt;
  &lt;div class="logo"&gt;
    &lt;div class="circle"&gt;
      &lt;div class="circle"&gt;
          &lt;div class="circle"&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  &lt;div class="hold-x"&gt;
    &lt;div class="xbox"&gt;&lt;/div&gt;
   &lt;/div&gt;
  &lt;/div&gt;
  &lt;div class="loading-text"&gt;
    Loading...
  &lt;/div&gt;
&lt;/div&gt;</code></pre>
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</p>

<p>Well i saw this loading animation on one website and i am planning to insert it into my code but the problem i am having is that how do i stop the animation once the page has completed loading. Any help would be highly appreciated</p>