如何造型 <select>和<option>与CSS？它必须能够与角

Question

HTML

Here is my code which i tried so far:

 <a href="https://silviomoreto.github.io/bootstrap-select/">bootstrap-select</a>, css works but i couldn't see any option value  in it
</p>
<select class=" tab-add-button tab-button bold pull-right" ng-model="teachingPlan.type" ng-options="type for type in ['Case Study','Project','Assignment','Quiz/Exam']" ng-change="assignmentTypeChange(teachingPlan)" >

<option value="" disabled > + Create Assessment</option>
</select>

Please help me regarding this

Answer 1

Use bootstrap select picker..

<script src="/js/Bootstrap/Select/bootstrap-select.js"></script>

<script type="text/javascript">
    $('.selectpicker').selectpicker({
    });
</script>