Description:
------------
There are some erros in your css sheet. Note that you should try to avoid vendor-prefixed property names.

Test script:
---------------
.refentry .refpurpose {
  background-color:#F0F0F0;
  border-top-color: #737373;
  border-bottom-color:1px solid #D6D6D6; <-- invalid (switch to "border-bottom")
  border-radius:0 0 2px 2px;
  box-shadow:
    inset 2px 0 2px -2px #D6D6D6,
    inset -2px 0 2px -2px #D6D6D6;
}

#usernotes h3.title {
    border-bottom: 0.166666667em solid;
    margin-bottom: -0.166666667.em; <-- invalid (switch to "em" without dot)
    line-height:2.666666667;
}

. <-- invalid (open selector, remove the dot)
/* }}} */

/* {{{ lists */