How to create inner text shadow

it's very simple

.text_css{
font-size:5em;
  color:transparent;
  text-shadow:3px 3px 2px rgba(0,0,0,0.4);
  -moz-text-shadow:3px 3px 2px rgba(0,0,0,0.4);
  -webkit-text-shadow:3px 3px 2px rgba(0,0,0,0.4);
}

Live Demo

How to create ie stylesheet

It's very simple now you just create a css file in saprate  only for ie and apply in your page

Target ALL VERSIONS of IE

<!--[if IE]>
    <link rel="stylesheet" type="text/css" href="all-ie-only.css" />
<![endif]-->

Target everything EXCEPT IE

<!--[if !IE]><!-->
    <link rel="stylesheet" type="text/css" href="not-ie.css" />
 <!--<![endif]-->

Target IE 7 ONLY

<!--[if IE 7]>
    <link rel="stylesheet" type="text/css" href="ie7.css">
<![endif]-->

Target IE 6 ONLY

<!--[if IE 6]>
    <link rel="stylesheet" type="text/css" href="ie6.css" />
<![endif]-->

Target IE 5 ONLY

<!--[if IE 5]>
    <link rel="stylesheet" type="text/css" href="ie5.css" />
<![endif]-->

Target IE 5.5 ONLY

<!--[if IE 5.5000]>
<link rel="stylesheet" type="text/css" href="ie55.css" />
<![endif]-->

Target IE 6 and LOWER

<!--[if lt IE 7]>
    <link rel="stylesheet" type="text/css" href="ie6-and-down.css" />
<![endif]-->

<!--[if lte IE 6]>
    <link rel="stylesheet" type="text/css" href="ie6-and-down.css" />
<![endif]-->

Target IE 7 and LOWER

<!--[if lt IE 8]>
    <link rel="stylesheet" type="text/css" href="ie7-and-down.css" />
<![endif]-->

<!--[if lte IE 7]>
    <link rel="stylesheet" type="text/css" href="ie7-and-down.css" />
<![endif]-->

Target IE 8 and LOWER

<!--[if lt IE 9]>
    <link rel="stylesheet" type="text/css" href="ie8-and-down.css" />
<![endif]-->

<!--[if lte IE 8]>
    <link rel="stylesheet" type="text/css" href="ie8-and-down.css" />
<![endif]-->

Target IE 6 and HIGHER

<!--[if gt IE 5.5]>
    <link rel="stylesheet" type="text/css" href="ie6-and-up.css" />
<![endif]-->

<!--[if gte IE 6]>
    <link rel="stylesheet" type="text/css" href="ie6-and-up.css" />
<![endif]-->

Target IE 7 and HIGHER

<!--[if gt IE 6]>
    <link rel="stylesheet" type="text/css" href="ie7-and-up.css" />
<![endif]-->

<!--[if gte IE 7]>
    <link rel="stylesheet" type="text/css" href="ie7-and-up.css" />
<![endif]-->

Target IE 8 and HIGHER

<!--[if gt IE 7]>
    <link rel="stylesheet" type="text/css" href="ie8-and-up.css" />
<![endif]-->

<!--[if gte IE 8]>
    <link rel="stylesheet" type="text/css" href="ie8-and-up.css" />
<![endif]-->

Hacks for all IE 

IE-6 ONLY

* html #div {
    height: 300px;
}

IE-7 ONLY

*+html #div {
    height: 300px;
}

IE-8 ONLY

#div {
  height: 300px\0/;
}

IE-7 & IE-8

#div {
  height: 300px\9;
}

NON IE-7 ONLY:

#div {
   _height: 300px;
}

Hide from IE 6 and LOWER:

#div {
   height/**/: 300px;
}

html > body #div {
      height: 300px;
}

Source By Css Tricks

How to Write css all standard Devices Iphone, Ipad, Smartphone

/* Smartphones (portrait and landscape) ----------- */
@media only screen
and (min-device-width : 320px)
and (max-device-width : 480px) {
/* Styles */
}

/* Smartphones (landscape) ----------- */
@media only screen
and (min-width : 321px) {
/* Styles */
}

/* Smartphones (portrait) ----------- */
@media only screen
and (max-width : 320px) {
/* Styles */
}

/* iPads (portrait and landscape) ----------- */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px) {
/* Styles */
}

/* iPads (landscape) ----------- */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : landscape) {
/* Styles */
}

/* iPads (portrait) ----------- */
@media only screen
and (min-device-width : 768px)
and (max-device-width : 1024px)
and (orientation : portrait) {
/* Styles */
}

/* Desktops and laptops ----------- */
@media only screen
and (min-width : 1224px) {
/* Styles */
}

/* Large screens ----------- */
@media only screen
and (min-width : 1824px) {
/* Styles */
}

/* iPhone 4 ----------- */
@media
only screen and (-webkit-min-device-pixel-ratio : 1.5),
only screen and (min-device-pixel-ratio : 1.5) {
/* Styles */
}

Reference URL