in vscode under view don't have my developer tools chrome code example

Example 1: forcing website to show in landscape mode only

<style type="text/css">
    #warning-message{ 
      display: none; 
	}
    @media only screen and (orientation:portrait){
        #wrapper { 
          display:none; 
      	}
        #warning-message { 
          display:block; 
      	}
    }
    @media only screen and (orientation:landscape){
        #warning-message{
          display:none; 
      }
    }
</style>

....

<div id="wrapper">
    <!-- your html for your website -->
</div>
<div id="warning-message">
    this website is only viewable in landscape mode
</div>

Example 2: can't see php7 in my mac

// Install PHP 7.3
curl -s http://php-osx.liip.ch/install.sh | bash -s 7.3