• HTML
• CSS

HTML

<div class="box">
    <span></span>
    <span></span>
    <span></span>
    <span></span>
    <div class="content">
        <h2>Box Hover Effects</h2>
        <p>
            Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
        	tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
        	quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
        	consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse
        	cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non
        	proident.
        </p>
    </div>
</div>

CSS

body
{
    margin:0;
    padding:0;
    display:flex;
    justify-content:center;
    align-items:center;
    height:100vh;
    background:#000;
    font-family:sans-serif;
}
.box
{
    position:relative;
    width:340px;
    height:340px;
}
.box .content
{
    position:absolute;
    top:10px;
    left:10px;
    right:10px;
    bottom:10px;
    background:#000;
    padding:20px;
    overflow:hidden;
    text-align:center;
    border:2px solid #fff;
}
.box .content:before
{
    content:'';
    position:absolute;
    top:0;
    left:-100%;
    width:100%;
    height:100%;
    background:rgba(255,255,255,.1);
    transition:0.5s;
    pointer-events:none;
}
.box:hover .content:before
{
    left:-50%;
}
.box .content h2
{
    margin:0 0 12px;
    padding:0;
    color:#fff;
}
.box .content p
{
    margin:0;
    padding:0;
    color:#fff;   
}
.box span
{
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    display:block;
    pointer-events:none;
}
.box span:before
{
    content:'';
    position:absolute;
    width:100%;
    height:2px;
    background:#0f0;
    transform-origin:left;
    transition:0.5s;
}
.box:hover span:before
{
    transform: scaleX(0);    
}
.box span:nth-child(even):before
{
    transform-origin:right;
    transition-delay:0.5s;
}

.box span:nth-child(1)
{
    transform:rotate(0deg);
}
.box span:nth-child(2)
{
    transform:rotate(90deg);
}
.box span:nth-child(3)
{
    transform:rotate(180deg);
}
.box span:nth-child(4)
{
    transform:rotate(270deg);
}

/*
    All the credits: https://www.youtube.com/watch?v=FsCYoDfsTSc
*/