.myButton {
   font-size: 16px;
   font-weight: bold;
   background: #fff;
   color: #66AD44;
   border: 1px solid #66ad44;
   border-radius: 10px;
   padding: 4px 20px;
   letter-spacing: 0px;
}

.myButton:hover {
   background: #66AD44;
   color: #fff;
}