body {
    margin: 0;
    padding: 0;
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

section {
    width: 80%;
    max-width: 600px;
    margin: 50px auto;
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

h1,h2 {
    text-align: center;
    margin-bottom: 20px;
}
a{text-decoration: none;}
input[type="text"],#res {
    width: calc(100% - 10px);
    padding: 10px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
}

button {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
}

#encryptBtn,#res {
    background-color: #3498db;
    color: #fff;
    margin-bottom: 10px;
}

#decryptBtn {
    background-color: #e74c3c;
    color: #fff;
}

button:hover {
    opacity: 0.8;
}


@media screen and (min-width: 768px) {
    section {
        width: 60%;
    }
   
}