Including sharing buttons inside the container

How can I get the sharing buttons to be inside the container, so that when I apply the following code:

.content-box{
   background: #FFF;
   width: 1200px;
   margin: auto;
   padding: 20px;
   box-shadow: 0px 0px 7px rgba(0,0,0,.8);
   border: 5px solid #696969;
   border-radius: 3px;
   -moz-box-sizing:border-box;
   -webkit-box-sizing:border-box;
   box-sizing:border-box;
}

they are not left out? You can see the effect at: http://www.planificamostuviaje.com/la-tumba-de-dracula/

Thanks