h2{
         text-align: center;color: #0000ff;border: 1px solid black; background: coral;padding: 10px;
         margin-bottom: 20px;width: 100%;    
         } 
         .btn_dev{
             margin-top: 10px; margin-bottom: 20px;text-align: center;
         }
         .btn {
             background: #0000ff;color: #ffffff;font-size: 20px;border: none;
               border-radius: 6px;
           }   
           .red{
               background: red;
               border: 1px solid #00ff00;
               border-radius: 20px;
           }
           label{
             font-size: 20px;color: blue;  
           }
           input{
               margin-left: 5px;border: none;border-bottom: 2px solid;font-size: 13px; 
                 border-block-color: #ff0000;width: 15%;
           }
           .details{
               
           margin-left: 5px;border: 2px solid #ff0000;font-size: 13px; 
                 width: 40%;height: 70px;
           }
           
           .mar{
             margin: 15px;  
           }

           .margin_left_10px{
               margin-left: 10px;
           }