Edit in JSFiddle

<div class="wrap rounded">

     <h1>Sample Box</h1>   
       <img src="http://www.wpthemegenerator.com/wp-content/uploads/2012/06/Image.jpg">
        <p>
         Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam luctus consectetur dolor a porttitor. Curabitur id sem sed ante fringilla pulvinar et id lectus. Nullam justo ipsum, hendrerit ut commodo nec, pellentesque nec erat. Pellentesque pharetra.
       </p> 
       <br />
       <a href="http://www.designshock.com/"> DesignShock.com </a>

</div>

body{
    background: url(http://subtlepatterns.com/patterns/natural_paper.png) ;
    font-size: 11px;
    font-size: 11px;
    font-family: 'Open Sans', sans-serif;
    color: #EAEAEA;
    text-align: center;
}

.wrap{
   position:relative;
   width:300px;
   height:310px;
   padding:1em 1em;
   margin:20px auto;
   background:#666666;
   overflow:hidden;
}

.wrap:before {
   content:"";
   position:absolute;
   top:0;
   right:0;
   border-width:0 16px 16px 0;
   border-style:solid;
   border-color:#fff #fff #658E15 #658E15;
   background:#4E4E4E;
   -webkit-box-shadow:0 1px 1px rgba(0,0,0,0.3), -1px 1px 1px rgba(0,0,0,0.2);
   -moz-box-shadow:0 1px 1px rgba(0,0,0,0.3), -1px 1px 1px rgba(0,0,0,0.2);
   box-shadow:0 1px 1px rgba(0,0,0,0.3), -1px 1px 1px rgba(0,0,0,0.2);
   display:block; width:0; /* Firefox 3.0 damage limitation */
}

.wrap.rounded {
   -webkit-border-radius:5px 0 5px 5px;
   -moz-border-radius:5px 0 5px 5px;
   border-radius:5px 0 5px 5px;
}

.wrap.rounded:before {
   border-width:8px;
   border-color: #EBEAE6 #EBEAE6  transparent transparent;
   -webkit-border-bottom-left-radius:5px;
   -moz-border-radius:0 0 0 5px;
   border-radius:0 0 0 5px;
}

.wrap img {
    width: 100%;
    margin-top: 15px;
}

p{ 
    margin-top: 15px;
    text-align: justify;
}

h1{
    font-size: 20px;
    font-weight: bold;
    margin-top: 5px; 
    text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
}

a{
    text-decoration: none;
    color: #EAEAEA !important;
}

a:hover{
    text-decoration: underline;
    color: #fff !important ;
}