如何更改 :focus 上文本区域的边框颜色

我想改变焦点上 TEXTAREA 的边框颜色。但我的代码似乎无法正常工作。

代码已开启fiddle http://fiddle.jshell.net/ffS4S/.

<form name = "myform" method = "post" action="insert.php"  onsubmit="return validateform()" style="width:40%">
    <input type="text" placeholder="Enter Name." name="name" maxlength="300" class="input">
    <input type="email" placeholder="Enter E-mail." name="address" maxlength="300" class="input">
    <textarea placeholder="Enter Message." name="descrip" class="input" ></textarea>    
    <br>
    <input class="button secondary" type=submit name="submit" value="Submit" >
</form>

这是CSS

.input {
    border:0; 
    padding:10px; 
    font-size:1.3em; 
    font-family:"Ubuntu Light","Ubuntu","Ubuntu Mono","Segoe Print","Segoe UI";
    color:#ccc; 
    border:solid 1px #ccc; 
    margin:0 0 20px; 
    width:300px;
    -moz-box-shadow: inset 0 0 4px rgba(0,0,0,0.2); 
    -webkit-box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.2); 
    box-shadow: inner 0 0 4px rgba(0, 0, 0, 0.2);
    -webkit-border-radius: 3px; 
    -moz-border-radius: 3px; 
    border-radius: 3px;    
  }

input:focus { 
    outline: none !important;
    border-color: #719ECE;
    box-shadow: 0 0 10px #719ECE;
 }

.input:focus {
    outline: none !important;
    border:1px solid red;
    box-shadow: 0 0 10px #719ECE;
  }