.input-group .chosen-container{
  font-weight: normal;
}

.input-group .chosen-container > a{
  height:100%;
  box-shadow:none;
  background:none;
}

.input-group .input-group-prepend ~ .chosen-container > a{
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}