JSFiddle - React, Tailwind, and code Playground

by lustre

HTML

<div class="boxWrapper">
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras efficitur ex velit, eget pellentesque dui dictum at.</div>
    </div>
</div>
<div class="box">
    <div class="gradient"></div>
    <img src="http://www.webtutorialplus.com/Images/css-effects-image/1.jpg" alt="Web Tutorial Plus - Demo" width="300" height="400" />
    <div class="title">Title</div>
    <div class="overbox">
        <div class="tagline">Lorem ipsum dolor sit amet,...

CSS

body {
    margin:0;
    padding:0;
}

.boxWrapper {
    font-size:0;
    /*-webkit-backface-visibility: hidden;*/
}

.box {
    cursor: pointer;
    height: 400px;
    position: relative;
    overflow: hidden;
    width: 300px;
    z-index:400;
    display:inline-block;
}
.gradient {
    background: -moz-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* FF3.6+ */
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, rgba(255, 255, 255, 0)), color-stop(50%, rgba(128, 128, 128, 0)), color-stop(100%, rgba(0, 0, 0, 0.5)));
    /* Chrome,Safari4+ */
    background: -webkit-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* Chrome10+,Safari5.1+ */
    background: -o-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* Opera 11.10+ */
    background: -ms-linear-gradient(top, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* IE10+ */
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, rgba(128, 128, 128, 0) 50%, rgba(0, 0, 0, 0.5) 100%);
    /* W3C */
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#00ffffff', endColorstr='#80000000', GradientType=0);
    /* IE6-9 */
    z-index:401;
    width:100%;
    height:100%;
    position:absolute;
    top:0;
    left:0;
}
.box img {
    position: absolute;
    left: 0;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
    -ms-transition: all 300ms ease-out;
    transition: all 300ms ease-out;
    z-index:400;
}
.box .title {
    position:absolute;
    bottom:20px;
    left:25px;
    text-transform:uppercase;
    z-index:404;
    color:#fff;
    font-size:30px;
    -webkit-transition: all 300ms ease-out;
    -moz-transition: all 300ms ease-out;
    -o-transition: all 300ms ease-out;
   ...

JavaScript

jQuery(document).ready(function () {
    gridSize();
});

jQuery(window).resize(function () {
    gridSize();
});

/* Returns scrollbar width*/
function getScrollBarWidth() {
    var inner = document.createElement('p');
    inner.style.width = "100%";
    inner.style.height = "200px";

    var outer = document.createElement('div');
    outer.style.position = "absolute";
    outer.style.top = "0px";
    outer.style.left = "0px";
    outer.style.visibility = "hidden";
    outer.style.width = "200px";
    outer.style.height = "150px";
    outer.style.overflow = "hidden";
    outer.appendChild(inner);

    document.body.appendChild(outer);
    var w1 = inner.offsetWidth;
    outer.style.overflow = 'scroll';
    var w2 = inner.offsetWidth;
    if (w1 == w2) w2 = outer.clientWidth;

    document.body.removeChild(outer);

    return (w1 - w2);
};

function gridSize() {
    
    if ($('.box').width() > 0) {
        var w = $(window).width();    
    } else {
        var w = $(window).width() - getScrollBarWidth();
    }

    var h = $(window).height();

    var thirdw, halfw, halfh, overboxw, overboxh;
    
    /* Width needs to be 33%, height needs to be 50% */
    /* Full screen sizes */
    thirdw = w / 3;
    halfh = h / 2;

    $('.box').css({
        "width": thirdw,
            "height": halfh
    });

    /* Set overbox size */

    overboxw = thirdw - 60;
    overboxh = halfh - 60;

    $('.box .overbox').css({
        "width": overboxw,
            "height": overboxh
    });

    /* Resize the images based on the ratio */
    if (thirdw > halfh) {
        jQuery('.box img').css({
            "height": halfh +"px",
			"width": "auto"
        });
    } else {
        jQuery('.box img').css({
            //"height": halfh +"px"
        });
    }

    /*
    Bottom's affected:
    .box:hover .title == 110px (needs moving up depending on width of box as content beneath grows in height)
    
    */

}