.button3 {
  border-radius: 15px ;
  padding: 12px 24px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 18px;
  margin: 4px 2px;
  cursor: pointer;
  margin-top: 10px;
  margin-right: 10px;
    text-transform: uppercase;
     color:#000080;
     font-weight: lighter;
}

.button1 {background-color: transparent;
  border-color: transparent;
  } /* Green */
.button2 {
  background-color:lightblue;
 border-color: lightblue;
 } /* Blue */
.button4 {
  font-family: arial;
  border-radius: 10px ;
  padding: 7px 40px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 15px;
 
  margin: 4px 2px;
  cursor: pointer;
  margin-top: 10px;
  margin-right: 10px;
  
 color: #000080;
}