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;
    line-height: 1;
    color: #000;
    font-family: "ＭＳ Ｐ明朝", "ＭＳ 明朝", serif;  
}
.textBox{
    float: right;
    width: 410px;
    height: 190px;
    background-color: blue;
}