JSFiddle - React, Tailwind, and code Playground

HTML

<div class="contactdiv">
    <div class="ppdiv">
        <button class="ppenvelope">
            <img src="http://i.imgur.com/QU5CvxC.jpg" alt="Slika">
        </button>
        <button class="pptext"><span class="pptext2">PRIVATNA PORUKA</span>
        </button>
    </div>
    <!--Zatvoren ppdiv-->
    <div class="button2">
        <button class="ppenvelope">
            <img src="http://i.imgur.com/QU5CvxC.jpg" alt="Slika">
        </button>
        <button class="pptext"><span class="pptext2">PRIVATNA PORUKA</span>
        </button>
    </div>
    <!--Zatvoren button2-->
    <div class="button2">
        <button class="ppenvelope">
            <img src="http://i.imgur.com/QU5CvxC.jpg" alt="Slika">
        </button>
        <button class="pptext"><span class="pptext2">PRIVATNA PORUKA</span>
        </button>
    </div>
    <!--Zatvoren button2-->
    <div class="button2">
        <button class="ppenvelope">
            <img src="http://i.imgur.com/QU5CvxC.jpg" alt="Slika">
        </button>
        <button class="pptext"><span class="pptext2">PRIVATNA PORUKA</span>
        </button>
    </div>
    <!--Zatvoren button2-->
    <div class="button2">
        <button class="ppenvelope">
            <img src="http://i.imgur.com/QU5CvxC.jpg" alt="Slika">
        </button>
        <button class="pptext"><span class="pptext2">PRIVATNA PORUKA</span>
        </button>
    </div>
    <!--Zatvoren button2-->
</div>
<!--Zatvoren contactdiv-->

CSS

.contactdiv {
    width:271px;
}
.ppdiv {
    overflow: hidden;
    margin-top:20px;
    margin-left: 20px;
}
.ppenvelope, .pptext {
    float: left;
    border: none;
    height: 48px;
}
.ppenvelope {
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
    background: #b2d4dd;
}
.ppdiv img {
    padding:10px;
}
.button2 img {
    padding:10px;
}
.pptext {
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
    background: #c9e0e6;
    color:#4c6974;
}
.pptext2 {
    display: inline-block;
    color:#4c6974;
    padding-top: 13px;
    padding-bottom:13px;
    padding-left: 13px;
    padding-right: 13px;
}
.button2 {
    margin-top: 10px;
    margin-left:20px;
    overflow: auto;
}