.button {
  background-color: #4CAF50;
  border: none;
  color: white;
  padding: 5px;
  text-align: left;
  text-decoration: none;
  display: inline-block;
  font-size: 10px;
  margin: 2px 2px;
  width: 150px;
  height: 30px;
}

.button1 {border-radius: 5px;}
.button2 {border-radius: 4px;}
.button3 {border-radius: 8px;}
.button4 {border-radius: 12px;}
.button5 {border-radius: 50%;}