*{
    margin:0;
    padding:0;
    font-family: poppins;
    font-family: Ubuntu;
    }
    body{
        
        text-align: center;
         display:flex;
        align-items: center;
        justify-content:center;
        flex-direction: column;
        min-height:100vh;
       
    }
    h1{
        font-weight:500;
        color: rgb(149, 202, 235);
    }
    .sudoku-container{
        margin-top :21px;
        display:flex;
        justify-content: center;
        
    
    }
    table{
        border-collapse :collapse;
        border: 5px solid rgba(9, 9, 121, 1);
    
    }
    .cell{
        width:40px;
        height:40px;
        text-align:center;
        font-size: 20px;
        border: 1px solid #999;
        transform: all 0.3s  ease-in-out;
        background:rgb(244, 213, 99);
    }
    
    table tr:nth-child(2n) td,
    table tr:nth-child(2n) td{
        border-bottom:2px solid rgba(9, 9, 121, 1);
        /* border-bottom:2px solid #000; */
    }
    table td:nth-child(4n) {
        border-right: 2px solid rgba(9, 9, 121, 1);
        /* border-right: 2px solid #000; */
    }
    input{
        outline:none;
    }
    input::-webkit-outer-spin-button,
    input::-webkit-inner-spin-buton{
        -webkit-appearance:none;
        margin:0;
    
    }
    button{
        margin-top: 20px;
        padding:10px 20px ;
        font-size:16px;
        background-color: #1665cc;
        color:#fff;
        border:none;
        border-radius:4px;
        cursor: pointer;
        transition: all 0.3s ease;
    }
    
    .btn-s:hover{
        background-color: #92d3ff;
        color: #1665cc;
    }
    
    .backHome a:hover, .backHome:hover{
        text-decoration: none;
        background-color: #92d3ff;
        color:rgb(35, 107, 159);
    }
    .backHome, .backHome a{
        padding: 12px;
        background-color: #1665cc;
        border: none;
        border-radius: 10px;
        color: white;
        font-size: 14px;
        font-weight: 600;
        letter-spacing: 0.1rem;
        cursor: pointer;
        margin-bottom: 10px;
        text-decoration: none;
    }
    .output-cell {
        color: #1e25e8;
    }

    @media (max-width:400px){

        .cell{
            width:10vw;
            height:10vw;
            font-size: 5vw;
        }
  
    }
    .navbar{
        /* margin-top: 25px; */
        display: flex;
        justify-content: center;
        align-items: center;
        justify-content: space-between;
        height: 67px;
        width: 100%;
        background:linear-gradient(#1e2b59 , #0f1d34 );
        border-bottom:1px solid #ffb780;
    }
    .image img{
        height: 55px;
        width: 55px;
    }
    .left-nav ul{
        display: flex;
        justify-content: center;
        align-items: center;
    }
    .left-nav ul li{
        list-style: none;
    }
    .left-nav ul li a{
        text-decoration: none;
        color: #ffb780;
        text-align: center;
        padding: 14px 20px;
        text-decoration: none;
        font-size: 1.3rem;
    }
    .left-nav ul li a:hover{
        text-decoration: underline;
    }
    .footer-container{
        border-top: 1px solid #ffb780;
        width: 100%;
        background:linear-gradient(#1e2b59 , #0f1d34 );
        padding: 20px;
        /* background: url(Image.png); */
         background-position: center;
         line-height: 2.5rem;
    }
    .foot-head h2{
        text-align: center;
        color: aqua;
        font-weight: 600;
    }
    .foot-head p{
        color: #ffb780;
        text-align: center;
        font-size: 1.20rem;
    }
    .foot-navlinks h3{
        text-align: center;
        color: aqua;
        font-weight: 600;
    }
    .foot-navlinks {
        text-align: center;
    }
    .foot-navlinks a{
        color: #ffb780;
        font-size: 18px;
        padding: 10px;
    }
    .foot-social {
        text-align: center;
    }
    .foot-social h3{
        color: aqua;
        font-weight: 600;
    }
    .foot-social a{
        font-size: 30px;
        color: #ffb780;
    }
    html{
        overflow-x: hidden;
    }
    .head{
        margin-top: 30px;
        margin-bottom: 20px;
    }
    .backHome{
        margin-bottom: 30px;
    }
    @media screen and (max-width:525px) {
        body{
            width: 100%;
        }
        html{
            overflow-x: hidden;
        }
      
        .navbar{
            width: 100%;
        }
        .left-nav ul li a{
            padding: 0px 9px;
        }
        
      }
      @media screen and (max-width:380px) {
        body{
            width: 100%;
        }
        html{
            overflow-x: hidden;
        }
      
        .navbar{
            width: 100%;
        }
        .left-nav ul li a{
            padding: 0px 9px;
        }
        
      }