body{
            font-family: 'Courier New', Courier, monospace;

            border-radius: 20px;
        }
       #one{
        text-align: center;
        background-color: gray;
        border: 2px solid black;
        margin-bottom: 20px;
        border-radius: 20px;
       }
       #two{
        h2{
            text-decoration: underline;
        }
        text-align: center;
        background-color: green;
        border: 2px solid black;
        margin-bottom: 20px;
        border-radius: 20px;
       }
       #three{
        h2 {
            text-decoration: underline;
        }
        text-align: center;
        background-color: saddlebrown;
        border: 2px solid black;
        margin-bottom: 20px;
        border-radius: 20px;
       }
       #four{
        h2 {
            text-decoration: underline;
        }
        text-align: center;
        background-color: rgb(64, 64, 235);
        border: 2px solid black;
        margin-bottom: 20px;
        border-radius: 20px;
       }
       #five{
        h2{
            text-decoration: underline;
        }
        text-align: center;
        background-color: magenta;
        border: 2px solid black;
        margin-bottom: 20px;
        border-radius: 20px;
       }
       h2,ul{
        text-align: center;
       }
       
       
       #six{
        h2{
            text-decoration: underline;
        }
        background-color:mediumseagreen;
        border: 2px solid black;
        margin-bottom: 20px;
        border-radius: 20px;
       }
      #seven{
        h2 {
            text-decoration: underline;
        }
        border-radius: 20px;
        text-align: center;
        align-items: center;
        height: 100%;
        width: 500px;
        background-color: yellowgreen;
        border: 5px outset green;
        background-color: red;/*for browser that do not 
        support gradientes*/
        background-image: linear-gradient(red,yellow);
      }
      input{ 
        
       
       border:none;
       border-bottom: 1px solid;
       padding: 15px;
       background: none;

       

   }
    
    
       
    
     label{

        font-size: 20px;
        padding: 20px;
    
     }
      button{
        text-align: right;
        font-size: 20px;
        margin-bottom: 30px;
        border-radius: 10px;
        border-bottom: 10px ;
        padding: 3px;
      }

      
        :root {
            --bg-color-light: #ffffff;
            --text-color-light: #000000;
            --bg-color-dark: #000000;
            --text-color-dark: #ffffff;
          }
          
          body {
            background-color: var(--bg-color-light);
            color: var(--text-color-light);
            transition: background-color 0.3s, color 0.3s;
          }
          
          body.dark-mode {
            background-color: var(--bg-color-dark);
            color: var(--text-color-dark);
          }