<div class="right"></div>
<div class="left"></div>

.right{
  float: right;
  height: 180px;
  width:260px;
  background-color: green;
  border-style: solid;
  border-width: 1.5px;
  border-color: teal;
  border-radius: 25px;
}

.left {
  float: left;
  height: 180px;
  width:260px;
  background-color: skyblue;
  border-style: solid;
  border-width: 1.5px;
  border-color: lightblue;
  border-radius: 25px;
 
}