automation.css

body {
  font-family: Arial,"Helvetica Neue",Helvetica,sans-serif;
  font-size: 14px;
  line-height: 1.3rem;
  color: #242729;
  background: #FFF;
}

.btn {
  outline: none;
  border-radius: 3px;
  width: 80%;
  margin: 10px auto;
  display: block;
  height: 48px;
  background-color: #ffffff;
  color: #000000;
  font-size: 17px;
  border: 1px solid #cccccc;
  cursor: pointer;
  font-size: 23px;
}
.h1 {
  text-align: center;
  line-height: 1.2em;
}
.btn.activate {
  background-color: #5fba7d;
  color: #fff;
} 
.btn.activating {
  background-color: #b3b3a4; 
}