fix accordion alignement

neath.html

@@ -18,8 +18,8 @@
 
         .accordion:hover .accordion-item:hover .accordion-item-content,
 		.accordion .accordion-item--default .accordion-item-content{height:10.5em;}
-		.accordion-item-content, .accordion:hover .accordion-item-content{height:0;overflow:hidden;transition:height.25s;}
-		.accordion{padding:0;margin:0auto;width:100px;}
+		.accordion-item-content, .accordion:hover .accordion-item-content{height:0;overflow:hidden;transition:height.25s;text-align:center}
+		.accordion{padding:0;margin:auto;width:100px;}
 		.accordion-item:hover{background-color:yellow;}
 
         .type_select:hover{background-color:yellow;}
@@ -63,12 +63,12 @@
         </div>
     </div>
     <div class="row mt-3">
-        <div class="col-2" id="region-left">
+        <div class="col-3" id="region-left">
             <a href="" id="preview-link">
                 <img id="preview" alt="facsimile_preview" class="img-responsive fit-image"/>
             </a>
         </div>
-        <div class="col-9 text-center" id="tableregion">
+        <div class="col-8 text-center" id="tableregion">
             Please upload a TSV file:
             <br><br>
             <input type="file" id="tsv-file" name="files"/>