Luck Game with PHP

<!DOCTYPE HTML>
<html lang="en-US">
<head>
    <meta charset="UTF-8">
    <title>My Simple PHP Game</title>


<style>

.game{

    background-color:orange;
    text-align:center;
    font-family:Calibri;
    position: absolute;
    width:200px;
    top:0;
    bottom: 0;
    left: 0;
    right: 0;
    height:75px;

    margin: auto;

}

h1,h2{


    font-family:Calibri;
    text-align:center;

}


</style>


</head>
<body>

    <h1>Simple Game made with PHP</h1> <!-- Page Title -->
    <h2>Find serial killer from three man, if you can't you will die.</h2> <!--Desc. of the game-->

    <?php ##OPEN NEW TAG FOR PHP
        $killer = rand(1, 3); # Determine a number 1 between 3 (1,2,3)

        if($_POST){ #If user do post action, It will work.


            $blamedman = $_POST['sel']; #Get who player selected man as number

            if($killer == $blamedman){ #if determined number equals to selected man number it will work

                echo '<p style="background-color:green;text-align:center;font-size:25px;font-family:Calibri;">You win, reloading in 3 seconds</p>'; #YOU WIN MESSAGE
                header("refresh: 3;"); #refreshs the page

            }

            else{ #if not equals it, you will die

                echo '<p style="background-color:red;text-align:center;font-size:25px;font-family:Calibri;">You died, reloading in 3 seconds</p>'; #YOU LOSE MESSAGE
                header("refresh: 3;"); #refreshs the page
            }


        }


    ?> <!-- close php tag -->
    <div class="game"> <!-- created game class (css) for good look  -->
        <!----><a>Hint: Killer's name is contains "<?php  #We gave them hint. So we will use php there

        if($killer == 1){ #If killer is John hint will show killer name is contains J

            echo 'J';

        }
        else if($killer == 2){ #If killer is John hint will show killer name is contains A

            echo 'A';

        }
        else if($killer == 3){ #If killer is John hint will show killer name is contains E

            echo 'E';

        }
        ?> "</a> <!-- -->
        <form method="post"> <!--THIS IS IMPORTANT, IF YOU DONT DO THAT IT WILL NOT WORK IF($POST]} SECTION-->

            <select name="sel"> <!--name is important too. we used name at php codes-->

                <option value="1">John</option> <!--These man value is 1-->

                <option value="2">Daniel</option> <!-- 2-->

                <option value="3">James</option> <!--3 -->


            </select>

            <input type="submit" value="Blame"> <!--Submit button, need for this game-->

        </form>
    </div>

</body>
</html>