Update assets/css/custom_style.css

assets/css/custom_style.css

@@ -79,4 +79,4 @@ input[type='radio'] { visibility: hidden; display: none; }
 
 .slider-content { width: 450px; position: relative; float: right; }
 
-#ppl_threshold, #gradient_norm_threshold { width: 3em; height: 1.6em; top: 100%; margin-top: -.8em; text-align: center; line-height: 1.6em; }
+#ppl-threshold, #gradient-norm-threshold { width: 3em; height: 1.6em; top: 50%; margin-top: -.8em; text-align: center; line-height: 1.6em; }