.box {
border: #000000 1px solid;
padding:10px;
width: 200px;
height: 100px;
}
.box p {
margin:0;
padding:0;
width: auto;
}
.maru{
  border: 28px red solid;
  width: 42px;
  height: 42px;
  line-height: 50px;
  margin:auto;
  background-color: red;
  border-radius: 50%;
  }