KSSVINAY CODING PLATFORM

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this is code for basic chat application  without any user login  <! DOCTYPE html > < html lang = "en" > < head >     < meta charset = "UTF-8" >     < meta http-equiv = "X-UA-Compatible" content = "IE=edge" >     < meta name = "viewport" content = "width=device-width, initial-scale=1.0" >     < title > Document </ title >     < style >         * { box-sizing : border-box;}         body {             margin : 0 ; background-image : linear-gradient( 45deg ,rgb( 255 , 208 , 0 ) 50% ,rgb( 1 , 163 , 1 ) 50% );             height : 100vh ; background-attachment : fixed;         }         .maindiv {             height : auto; display : flex; flex-direction : column; align-items : center;             max-width : 1200px ; position : relative; left : 50% ; transform : translate( -50% , 0 );         }         .link {             height : 60px ; width : 95% ; background-color