JSFiddle - React, Tailwind, and code Playground

HTML

<div class="hoge">
      <div class="imgBox">
        <div class="img">img</div>
        <div class="num">1</div>
      </div>
      <div class="textBox">
          <p class="">テキストテキストテキストテキストテキストテキストテキストテキストテキスト</p>
      </div>
  </div>

CSS

.hoge{
  width: 700px;
  margin: 50px;
}
.imgBox{
  float: left;
  width: 290px;
  position: relative;
}
.img{
  height: 190px;
  background-color: green;
}
.img:before{
    position: absolute;
    content: "";
    color: #fff;
    z-index: 2;
    top: -20px;
    left: 10px;
    width: 40px;
    height: 40px;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    background-color: red;
}
.num{
    position: absolute;
    top: -12px;
    left: 24px;
    z-index: 3;
    font-size: 24px;
    color: #000;
    font-family: "游明朝", YuMincho, "ヒラギノ明朝 ProN W3", "Hiragino Mincho ProN", "HG明朝E", "ＭＳ Ｐ明朝", "ＭＳ 明朝", serif;  
}
.textBox{
    float: right;
    width: 410px;
    height: 190px;
    background-color: blue;
}