hello student here we will see that how to make side war using html and css i hope that you will like of this tutorial and if you want amazing source code so dont forget to supporting us through subscribe and share of this bog website among your friends for next topic lets break of this topic 1. Here you can create a header part and set of this on top through position absolute #menu { background-color : darkred ; color : white ; position : absolute ; top : 0 px ; line-height : 40 px ; height : 40 px ; width : 100 % ; padding-left : 10 px ; text-transform : uppercase ; } in this header part we will take any tag where we will use a javascript function onclick and you can choose any name of this function i choosed open because we want to open of this head 2. and next topic is here we will take a div or nav tag for storing <li> tag .