Hover a whole element to show details in CSS

<style type="text/css">

.portfolio-web
{
    background: #f5f5f5;
    padding: 20px 0;
}
.portfolio-container
{
    margin: 40px 0;
}
.portfolio-tagline
{
    font-family: 'Oswald', Arial, sans-serif;
    font-size: 3em;
    font-weight: 400;
    text-transform: uppercase;
    text-align: center;
    margin: 30px 0;
}
.portfolio-item
{
    background: white;
    width: 100%;
    height: 280px;
    margin-top: 20px;
    overflow: hidden;
    position: relative;
    vertical-align: top;
}
.portfolio-image
{
    cursor: default;
}
.portfolio-image-one
{
    width: 100%;
    height: 200px;
}
.portfolio-info
{
    background: white;
    margin-top: 200px;
    position: absolute;
    left: 0;
    top: 0;
    height: 280px;
    text-align: center;
    text-decoration: none;
    transition: all 0.5s ease;
}
.portfolio-item:hover > .portfolio-info
{
    margin-top: 0;
    text-decoration: none;
}
.portfolio-logo-one
{
    width: 100%;
    height: 80px;
    vertical-align: middle;
}
.porfolio-brief-info
{
    color: #33b5e5;
    font: 20px 'Open Sans', Arial, sans-serif;
    margin: 0;
    padding: 10px;
    position: absolute;
}
.portfolio-info-link
{
    color: white;
    font: 14px 'Open Sans', Arial, sans-serif;
    padding: 10px;
    padding-top: 100px;
    font-weight: bold;
}

img{
    width: 400px;
    height: 400px;
}

</style>

<div class="col-lg-3">
    <div class="portfolio-item">
        <a class="portfolio-image" href="#">
            <div class="portfolio-image-one">
                <img src="wall.jpg" alt="Thumbnail" />
            </div>
        </a>
        <a class="portfolio-info" href="#">
            <div class="portfolio-logo-one">
                <img src="Rangoli.png" alt="Logo" />
            </div>
            <p class="porfolio-brief-info">
                Next Year My Rangoli Target...!!
            </p>

            <p class="portfolio-info-link">By: MaHii</p>
        </a>
    </div>
</div>


Output :)

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