* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

.e-button-group {
  display: flex;
  width: 50%;

}
.e-button {  
  border: 2px solid #4CAF50;
  background-color: #4CAF50; /* Green */
  color: white;
  padding: 15px 10px;
  margin: 2px;
  text-align: center;
  text-decoration: none;
  font-size: 16px;
  transition-duration: 0.4s;
  cursor: pointer;	
  width: 33%;
}	
.e-button:hover {
  background-color: white;
  color: #4CAF50;		  
}


.main-editor-300px {
  display: flex;
  width: 100%;
  height: 300px;
}
.main-editor-500px {
  display: flex;
  justify-content: center;
  width: 100%;
  height: 500px;
}
.main-editor-700px {
  display: flex;
  width: 100%;
  height: 700px;
}


.first {
  background-color: black;
  width: 50%;
  height: 100%;
}

.second {
  background-color: white;
  width: 50%;
  overflow-y: auto;
  /*white-space: pre;*/		  
  box-shadow: 0 1px 1px rgb(22, 22, 22);	 
  height: 100%;
}


#my-fullscreen:fullscreen .main-editor-300px {
  height: 90%;
}
#my-fullscreen:fullscreen .main-editor-500px {
  height: 90%;
}
#my-fullscreen:fullscreen .main-editor-700px {
  height: 90%;
}