styles.css

/*  JavaScript 6th Edition
    Chapter 10
    Hands-on Project 10-1

    Filename: styles.css
*/

/* apply a natural box layout model to all elements */
* {
   -moz-box-sizing: border-box;
   -webkit-box-sizing: border-box;
   box-sizing: border-box;
}

/* reset rules */
html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
   margin: 0;
   padding: 0;
   border: 0;
   font-size: 100%;
   font: inherit;
   vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
   display: block;
}

body {
   line-height: 1;
   min-width: 320px;
   max-width: 640px;
   background: white;
   margin: 0 auto;
   font-family: Arial, Helvetica, sans-serif; 
   -webkit-box-shadow: 10px 0px 10px rgba(50, 50, 50, 1),
                       0px 10px 10px rgba(50, 50, 50, 1),
                       -10px 0px 10px rgba(50, 50, 50, 1);
   -moz-box-shadow:    10px 0px 10px rgba(50, 50, 50, 1),
                       0px 10px 10px rgba(50, 50, 50, 1),
                       -10px 0px 10px rgba(50, 50, 50, 1);
   box-shadow:         10px 0px 10px rgba(50, 50, 50, 1),
                       0px 10px 10px rgba(50, 50, 50, 1),
                       -10px 0px 10px rgba(50, 50, 50, 1);
}

ol, ul {
   list-style: none;
}

/* page header */
header {
   background: #04819E;
   width: 100%;
   color: #FFFFFF;
   font-size: 48px;
   text-align: center;
   line-height: 1.5em;
   border-bottom: 1px solid black;
}

/* main content */
article {
   width: 100%;
   text-align: center;
   background: ivory;
   padding-bottom: 20px;
   overflow: auto;
}

h2 {
   font-weight: bold;
   font-size: 24px;
   padding: 10px;
}

#grid {
   overflow: auto;
   width: 266px;
   margin: 0 auto;
   border: 1px solid black;
}

#grid div {
   float: left;
   width: 88px;
   height: 99px;
   border: 1px solid black;
}

#top1, #bottom1 {
   clear: left;
}

#image {
   float: left;
   margin-left: 50px;
}

#image img {
   border: 10px solid darkgoldenrod;
}

#pieces {
   position: relative;
   height: 110px;
}

#pieces div {
   position: absolute;
   width: 14.6667%;
   margin: 1%;
   padding: 1em 0;
   height: 110px;
}

#piece1 {
   left: 0px;
   background: url("images/frog_03.png") center center no-repeat;
}

#piece2 {
   left: 16.6667%;
   background: url("images/frog_02.png") center center no-repeat;
}

#piece3 {
   left: 33.3334%;
   background: url("images/frog_05.png") center center no-repeat;
}

#piece4 {
   left: 50%;
   background: url("images/frog_01.png") center center no-repeat;
}

#piece5 {
   left: 66.6667%;
   background: url("images/frog_06.png") center center no-repeat;
}

#piece6 {
   left: 83.3334%;
   background: url("images/frog_04.png") center center no-repeat;
}

@media all and (max-width: 550px) {
   #grid {
      margin: 0 auto;
      width: 134px;
   }
   #grid div {
      width: 44px;
      height: 49px;
   }
   #image {
      float: left;
      width: 100%;
      text-align: center;
      margin: 0 0 20px;
   }
   #piece1 {
      background: url("images/frog_03_sm.png") center center no-repeat;
   }
   
   #piece2 {
      background: url("images/frog_02_sm.png") center center no-repeat;
   }
   
   #piece3 {
      background: url("images/frog_05_sm.png") center center no-repeat;
   }
   
   #piece4 {
      background: url("images/frog_01_sm.png") center center no-repeat;
   }
   
   #piece5 {
      background: url("images/frog_06_sm.png") center center no-repeat;
   }
   
   #piece6 {
      background: url("images/frog_04_sm.png") center center no-repeat;
   }
}