ブログで吹き出しを使ってキャラ同士を会話させる方法【コードあり】

<ul class="chara-talk">
    <li class="unitone"><span></span>これで記事が賑やかになりますね</li>
    <li class="fukkun"><span></span>荒らしてやるぜ</li>
    <li class="unitone"><span></span>やめなさい。</li>
</ul>

.art-cont .chara-talk {
    margin: 50px 0;
    padding: 0;
}
.art-cont .chara-talk li {
    width: 75%;
    margin-left: 100px;
    padding: 15px;
    background-color: #f3f6f9;
    border: solid 2px #c3d2de;
    border-radius: 7px;
    box-shadow: 0px 2px 8px -1px rgba(0,0,0,0.2);
    position: relative;
}
.art-cont .chara-talk li:nth-child(2n) {
    background-color: #fff9f1;
    border: solid 2px #ffddaa;
}
.art-cont .chara-talk li + li {
    margin-top: 40px;
}
.art-cont .chara-talk li:empty {
    margin: 0;
    padding: 0;
    height: 0;
}
.art-cont .chara-talk li:before {
    position: absolute;
    top: 19px;
    left: -7px;
    width: 10px;
    height: 10px;
    margin: auto;
    background-color: #f3f6f9;
    border-top: 2px solid #c3d2de;
    border-right: 2px solid #c3d2de;
    -webkit-transform: rotate(-135deg);
    -moz-transform: rotate(-135deg);
    -ms-transform: rotate(-135deg);
    -o-transform: rotate(-135deg);
    transform: rotate(-135deg);
    content: '';
}
.art-cont .chara-talk li:nth-child(2n):before {
    background-color: #fff9f1;
    border-top: 2px solid #ffddaa;
    border-right: 2px solid #ffddaa;
}

.art-cont .chara-talk li span {
    display: block;
    position: absolute;
    top: -5px;
    left: -78px;
    width: 50px;
    height: 50px;
}
.art-cont .chara-talk li span:before {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 10;
    width: 50px;
    height: 50px;
    border: solid 2px #555;
    border-radius: 50%;
    overflow: hidden;
    background: no-repeat center center;
    background-size: 54px 66px;
    content: '';
}
.art-cont .chara-talk li span:after {
    display: block;
    position: absolute;
    bottom: -22px;
    left: 0;
    right: 0;
    margin: 0 -10px;
    font-size: 11px;
    text-align: center;
}

/*** キャラクター ***/
.art-cont .chara-talk .unitone span:before {background-image: url(ここにキャラ画像のパス);}
.art-cont .chara-talk .unitone span:after {content: 'キャラの名前';}

.art-cont .chara-talk .fukkun span:before {background-image: url(ここにキャラ画像のパス);}
.art-cont .chara-talk .fukkun span:after {content: 'キャラの名前';}