create.css

form{
   
    /* border: 1px solid; */
    width: 300px;
    text-align: center;
    margin: auto;
    background-color: aqua;
    box-shadow: rgba(0, 0, 0, 0.25) 0px 54px 55px, rgba(0, 0, 0, 0.12) 0px -12px 30px, rgba(0, 0, 0, 0.12) 0px 4px 6px, rgba(0, 0, 0, 0.17) 0px 12px 13px, rgba(0, 0, 0, 0.09) 0px -3px 5px;
    border-radius: 10px;

}


form > button{
    
    border-radius: 10px;
    text-decoration: none;
    border: none;
    box-shadow: rgba(0, 0, 0, 0.15) 1.95px 1.95px 2.6px;
    
}

#login{

      
    border-radius: 10px;
    color: black;
   
    border: none


}

@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    form {
        padding: 15px;
    }

    input[type="text"], input[type="submit"] {
        padding: 8px;
    }

    button {
        padding: 8px 15px;
    }
}