how to trigger slide animation in css code example

Example: css animation slide in from right

<div class="wrapper">
    <img id="slide" src="img.png" />
</div>
<style>
.wrapper {
    position: relative;
    overflow: hidden;
    width: 100px;
    height: 100px; 
    border: 1px solid black;
}

#slide {
    position: absolute;
    left: -100px;
    width: 100px;
    height: 100px;
    background: blue;
    -webkit-animation: slide 0.5s forwards;
    -webkit-animation-delay: 2s;
    animation: slide 0.5s forwards;
    animation-delay: 2s;
}

@-webkit-keyframes slide {
    100% { left: 0; }
}

@keyframes slide {
    100% { left: 0; }
}
</style>