Кросбрайзерный дизайн, с растягиванием в низ, если контента мало то низ будет как бы пустой, а этот метод растягивает.<div class="wrapper">
<header class="header">
Верх
</header>
<main class="content">
Центр
</main>
</div>
<footer class="footer">
Низ
</footer>
</body>
<b>CSS с нормализацией.</b>
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%;}
html{-webkit-text-size-adjust:100%;-ms-text-size-adjust:100%}
article,aside,details,figcaption,figure,footer,header,hgroup,main,nav,section,summary{display:block}
audio,canvas,video{display:inline-block}
audio:not([controls]){display:none;height:0}
[hidden]{display:none}
a{outline:none; text-decoration: none;}
abbr[title]{border-bottom:1px dotted}
pre{white-space:pre;white-space:pre-wrap;word-wrap:break-word}
sub,sup{font-size:75%;line-height:0;position:relative}
sup{top:-0.5em}
sub{bottom:-0.25em}
fieldset{border:1px solid #c0c0c0;margin:0 2px;padding:.35em .625em .75em}
button,input,select,textarea{font-family:inherit;font-size:100%;margin:0}
button,input{line-height:normal}
button,html input[type="button"],input[type="reset"],input[type="submit"]{-webkit-appearance:button;cursor:pointer}
button[disabled],input[disabled]{cursor:default}
input[type="checkbox"],input[type="radio"]{box-sizing:border-box;padding:0}
input[type="search"]{-webkit-appearance:textfield;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;box-sizing:content-box}
input[type="search"]::-webkit-search-cancel-button,input[type="search"]::-webkit-search-decoration{-webkit-appearance:none}
button::-moz-focus-inner,input::-moz-focus-inner{border:0;padding:0}
textarea{overflow:auto;vertical-align:top}
input:focus,button:focus,select:focus,textarea:focus{outline:none}
table{border-collapse:collapse;border-spacing:0}
img { border: 0; }
:focus::-webkit-input-placeholder {color: transparent}
:focus::-moz-placeholder {color: transparent}
:focus:-moz-placeholder {color: transparent}
:focus:-ms-input-placeholder {color: transparent}
*{
padding: 0;
margin: 0;
}
html{height:100%;}
* html body{height:100%;}
html, body{
font-family: tahoma, Helvetica, sans-serif;
font-size: 14px;
height: 100%;
background: #fff;
}
.wrapper {
width: 100%;
min-width: 1100px;
min-height: 100%;
height: auto !important;
height: 100%;
}
.header {
width: 100%;
height: 150px;
background: #ffffff;
}
.content {
padding: 0 0 150px;
}
.footer {
margin: -245px auto 0;
min-width: 1100px;
height: 245px;
position: relative;
}
