[class*="fontawesome-"]:before {

  font-family: 'FontAwesome', sans-serif;

}

​

body {

  background: #ececec;

  overflow: hidden;

  user-select: none;

}

​

#Button {

  position: absolute; top: px; left: 15px;

  width: 60px; height: 60px;

  font-size: px; 
15
  text-align: center; 

  line-height: 60px; 

  background: #e74c3c;
18
  border-radius: 50%;

  color: #ececec;

  cursor: pointer;

  z-index: 1;

}

​