How to post form in the line?

I ask this question with such a situation I have on the page is not in a line and column? How to change to be in line?
HTML
<h3 class="H2wTR text-center"> Converter</h3>
 <form class="form-inline .col-md-8 text-center" style="float: center; padding: 25px;">
 <div class="form-group" style="display: inline-block;">
the <div>
 <select name="cur1" style="width:80px" class="form-control">
<option>USD</option>
<option>EUR</option>
<option>UAH</option>
<option>GPB</option>
</select>
</div>
 <div id="inputed">
 <input type="text" class="form-control" v-model="inp" style="width: 70px">
</div>
 <button class="btn btn-default"><i class="glyphicon glyphicon-sort"></i></button>
 <select name="cur2" style="width:80px" class="form-control">
<option>EUR</option>
<option>USD</option>
<option>UAH</option>
<option>GPB</option>
</select>
 <h4 class="H2wTR"> - {{res}}</h4>
</div>
</form>
<hr>

 
June 27th 19 at 15:15
1 answer
June 27th 19 at 15:17

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