body{
  
}
h1{
     text-align: center;
    
    font-size: 40px;
    text-shadow: 3px 2px red;
    text-indent: 3px;
  text-align:center;
    font-weight: 500;
 
}
p{ 
    word-spacing: 5px;
    letter-spacing: 2px;
    font-size: 20px;
 
    text-indent: 3px;
    
}

.iframe1{
     width: 1000px;
  border: 5px solid black;
  padding: 15px;
  margin: 10px;
}
.function-box{
     border: 1px solid black;
    font-weight: 100;
    font-size: 15px;
}