.button {
  border: none;
  color:black;
  padding: 5px;
  height:50px;
  width:90px; 
  text-align: center;
  background-color: green;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
  border-radius: 15px;
}

.button1 {background-color: #04AA6D; } /* Green */
.button2 {background-color: #008CBA; color:white;} /* Blue */
.button3 {background-color: orchid; } /* orchid */
.button4 {background-color: springgreen; } /* springgreen */
.button5 {background-color: #e6c41c; color:black;} /* hex yellow */
.button6 {background-color: #646969; color:black;} /* hex yellow */