.entry-title span {
    background: #353232;
    line-height: 20px;
    padding: 0 10px;
    margin: 8px;
    float: right;
}

.entry-title span {
    background: #2f2d2d;
    line-height: 20px;
    padding: 0 10px;
    margin: 8px;
    float: right;
    border: 1px solid #5c5e61;
    border-radius: 3px;
}

<div style="text-align:right;padding-bottom:3px;"><a href="/news/0-0-0-0-1" class="button24">Добавить новость</a></div>

<style>  
a.button24 {
  display: inline-block;
  color: white;
  text-decoration: none;
  padding: .5em 2em;
  outline: none;
  border-width: 2px 0;
  border-style: solid none;
  border-color: #FDBE33 #000 #D77206;
  border-radius: 6px;
  background: linear-gradient(#F3AE0F, #E38916) #E38916;
  transition: 0.2s;
}
a.button24:hover { background: linear-gradient(#f5ae00, #f59500) #f5ae00; }
a.button24:active { background: linear-gradient(#f59500, #f5ae00) #f59500; }
</style>