JSFiddle - React, Tailwind, and code Playground

by D S

HTML

<div class="mainBox">
    <div class="leftBox">
        <div class="LeftBox-InnterTop">
            <div class="SmallBoxes 1">hi</div>
            <div class="SmallBoxes"></div>
            <div class="SmallBoxes"></div>
            <div class="SmallBoxes"></div>
        </div>
        <div class="LeftBox-InnterButtom"></div>
    </div>
    <div class="rightBox"></div>
</div>

CSS

.mainBox {
    width:600px;
    height:300px;
    background:black;
}
.leftBox {
    float:left;
    width:300px;
    height:300px;
    background-image:url(http://goo.gl/Z3Escd);
}
.rightBox {
    float:right;
    width:300px;
    height:300px;
    background:#381234;
}
.LeftBox-InnterTop {
    width:100%;
    height:90%;
    background: rgba(255, 255, 255, 0.50);
    opacity: 0;
    -webkit-transition: opacity 0.5s linear;
    transition: opacity 0.5s linear;
}
.LeftBox-InnterButtom {
    width:100%;
    height:10%;
    background: rgba(0, 0, 0, 0.80);
}
.SmallBoxes {
    float:left;
    width:50%;
    height:50%;
    background-color:rgba(168, 14, 16, 0.50);
    box-shadow: inset 0 0 1px #fff;
}

.mainBox:hover .LeftBox-InnterTop {
    opacity: 1;
}

JavaScript

var danial = $(".leftBox").css("background-image");
if (danial.search('Z3Escd') == 1){
console.log("done");
}

if($(".leftBox").css("background-image") === "url") { 
    //$(".leftBox").css("background", "#C2DAEF");
    //console.log("yes");
}