Sharepoint 2010 Calander webpart Css issue

I alreday created using Calander List for "Upcoming Events Company",
After goto Edit ->  Edit HTML Source  insert Following CSS ,
/* All TDs in the table row */
.ms-WPHeader TD{
background-color: #f7f7f7;
filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#ebebeb', endColorstr='#e2e2e2');
background: -webkit-gradient(linear, left top, left bottom, from(#e2e2e2), to(#ebebeb));
background: -moz-linear-gradient(top, #e2e2e2, #ebebeb);
border-top:1px #cfcfcf solid; border-bottom:1px #e2e2e2 solid!important;
/* for css / jquery drop shadow */
border:1px #777 solid!important;
-moz-box-shadow: 5px 5px 5px #ccc;
-webkit-box-shadow: 5px 5px 5px #ccc;
box-shadow: 5px 5px 5px #ccc;/* CSS3 */
filter: progid:DXImageTransform.Microsoft.DropShadow(OffX=5, OffY=5, Color=#e9e9e9);    
.WebPartBorder > tbody {
/* Border to the sides */
.ms-WPHeader td:first-child {
border-left:1px #e2e2e2 solid;
.ms-wpTdSpace {
border-right:1px #e2e2e2 solid;
/* Web part title */
.ms-WPTitle {
color: #333;
/* linked title and visited */
.ms-WPTitle a, .ms-WPTitle a:visited {
color: #333!important;
/* hover title */
.ms-WPTitle a:hover {
/* hover web part menu */
border-top:1px solid #ccc;
border-right:1px solid transparent;
border-left:1px solid transparent;
/* for the jQuery */
.LinkTextColor {


but it will show when after insert but after Save and Close it will vanished,and no out put for CSS

.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .ms-WPHeader TD {
      BORDER-TOP: #cfcfcf 1px solid; BORDER-BOTTOM: #e2e2e2 1px solid; PADDING-BOTTOM: 3px; PADDING-TOP: 3px; PADDING-LEFT: 3px; PADDING-RIGHT: 3px; BACKGROUND-COLOR: #fe0449;COLOR:#fff}
.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .WebPartBorder {
      BORDER-TOP: #777 1px solid; BORDER-RIGHT: #777 1px solid; BORDER-BOTTOM: #777 1px solid; BORDER-LEFT: #777 1px solid; BACKGROUND-COLOR: #fff; box-shadow: 5px 5px 5px #fff
.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .ms-wpTdSpace {
      BORDER-RIGHT: #e2e2e2 1px solid
.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .ms-WPTitle {
      FONT-WEIGHT: bold; COLOR: #fff}
.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .ms-WPTitle A {
      TEXT-DECORATION: none !important; COLOR: #fff !important
.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .ms-WPTitle A:visited {
      TEXT-DECORATION: none !important; COLOR: #fff !important
.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .ms-WPTitle A:hover {
      COLOR: #fff !important
.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .ms-WPHeaderTdMenu:hover {
      BORDER-TOP: #ccc 1px solid; BORDER-RIGHT: transparent 1px solid; BACKGROUND-IMAGE: none; BORDER-LEFT: transparent 1px solid; BACKGROUND-COLOR: #f7f7f7
.ExternalClass9FF3A5730B2547EDA3542CA31F50A9A2 .LinkTextColor {
      COLOR: red
, then after go to HTML Editor following CSS will show.

Could you please someone show me how to put proper way to CSS file in to the Calander List.
LVL 10
Who is Participating?
Robin HallSenior Web Solutions ArchitectCommented:

From my personal experience, if I'm trying to add in a little CSS or Javascript to the page I don't put it directly in the HTML.

If you add a Form Web Part to the page and put your CSS into the web part via "Source Editor", that will prevent SharePoint from altering your CSS.  Just make sure you set the Chrome to "None" in order for it not to be visible once you get out of edit mode.

Also make sure that you wrap it in

<style type="text/css">

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