diff --git a/form.php b/form.php
index 551e35c..be4339f 100644
--- a/form.php
+++ b/form.php
@@ -26,6 +26,11 @@ class form
   /** The method used to send the values */
   private $method = "post";
 
+  /** The Bootstrap width of the column of titles */
+  public $titlewidth = 2;
+  /** The Bootstrap width of the column of fields */
+  public $fieldswidth = 10;
+
   /** Create a form
       @param string|null $formName The form name
     */
@@ -188,6 +193,8 @@ class form
       if (isset ($errors[$field->name]) &&
           $errors[$field->name] !== "unset")
         $field->errors = $errors[$field->name];
+      $field->titlewidth = $this->titlewidth;
+      $field->fieldwidth = $this->fieldwidth;
       $res .= $field->display ();
     }
 
@@ -250,6 +257,10 @@ class formfield
   public $rows;
   /** Number of columns */
   public $cols;
+  /** The Bootstrap width of the column of titles */
+  public $titlewidth = 2;
+  /** The Bootstrap width of the column of fields */
+  public $fieldswidth = 10;
   /** When adding a field, the name and the label are the minimum mandatory
       @param string $name Name of the field
       @param string $label Label of the field */
@@ -275,7 +286,7 @@ class formfield
     if (isset ($this->errors))
       $res .= " has-".$this->errors[0];
     $res .= "'>\n";
-    $res .= "    <label class='col-sm-2 control-label' for='".
+    $res .= "    <label class='col-sm-$this->titlewidth control-label' for='".
             $this->formName."_";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES);
     if (count ($this->titles) > 1)
@@ -290,7 +301,7 @@ class formfield
     else
       $res .= "  ";
     $res .= "</label>\n";
-    $res .= "    <div class='col-sm-10'>\n";
+    $res .= "    <div class='col-sm-$this->fieldswidth'>\n";
     if (count ($this->titles) === 0)
       $this->titles = array ("");
     foreach ($this->titles as $key=>$val)
@@ -401,7 +412,7 @@ class formfield
     if (isset ($this->errors))
       $res .= " has-".$this->errors[0];
     $res .= "'>\n";
-    $res .= "    <label class='col-sm-2 control-label' for='".
+    $res .= "    <label class='col-sm-$this->titlewidth control-label' for='".
             $this->formName."_";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."'";
     if (isset ($this->hidden) && $this->hidden !== FALSE)
@@ -413,7 +424,7 @@ class formfield
     else
       $res .= "  ";
     $res .= "</label>\n";
-    $res .= "    <div class='col-sm-10'>\n";
+    $res .= "    <div class='col-sm-$this->fieldswidth'>\n";
     $res .= "      <input type='password'";
     $res .= " name='$this->formName"."[";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."]'";
@@ -461,7 +472,7 @@ class formfield
     if (isset ($this->errors))
       $res .= " has-".$this->errors[0];
     $res .= "'>\n";
-    $res .= "    <label class='col-sm-2 control-label' for='".
+    $res .= "    <label class='col-sm-$this->titlewidth control-label' for='".
             $this->formName."_";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."_0'";
     if (isset ($this->hidden) && $this->hidden !== FALSE)
@@ -473,7 +484,7 @@ class formfield
     else
       $res .= "  ";
     $res .= "</label>\n";
-    $res .= "    <div class='col-sm-10'>\n";
+    $res .= "    <div class='col-sm-$this->fieldswidth'>\n";
     if (is_string ($this->defaults))
       $this->defaults = array ($this->defaults);
     $res .= "      <input type='hidden'";
@@ -535,7 +546,7 @@ class formfield
     if (isset ($this->errors))
       $res .= " has-".$this->errors[0];
     $res .= "'>\n";
-    $res .= "    <label class='col-sm-2 control-label' for='".
+    $res .= "    <label class='col-sm-$this->titlewidth control-label' for='".
             $this->formName."_";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."'";
     if (isset ($this->hidden) && $this->hidden !== FALSE)
@@ -547,7 +558,7 @@ class formfield
     else
       $res .= "  ";
     $res .= "</label>\n";
-    $res .= "    <div class='col-sm-10'>\n";
+    $res .= "    <div class='col-sm-$this->fieldswidth'>\n";
     if (isset ($this->defaults) && is_array ($this->defaults))
     {
       if (isset ($this->readonly) && $this->readonly !== FALSE)
@@ -640,7 +651,8 @@ class formfield
     // No $this->label, $this->multiple, $this->error, $this->rows,
     // $this->cols
     $res .= "<div class='form-group'>\n";
-    $res .= "    <div class='col-sm-12'>\n";
+    $res .= "    <div class='col-sm-".($this->titlewidth+$this->fieldswidth).
+            "'>\n";
     $res .= "      <input type='submit'";
     $res .= " name='$this->formName"."[";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."]'";
@@ -671,7 +683,7 @@ class formfield
     if (isset ($this->errors))
       $res .= " has-".$this->errors[0];
     $res .= "'>\n";
-    $res .= "    <label class='col-sm-2 control-label' for='".
+    $res .= "    <label class='col-sm-$this->titlewidth control-label' for='".
             $this->formName."_";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."'";
     if (isset ($this->hidden) && $this->hidden !== FALSE)
@@ -683,7 +695,7 @@ class formfield
     else
       $res .= "  ";
     $res .= "</label>\n";
-    $res .= "    <div class='col-sm-10'>\n";
+    $res .= "    <div class='col-sm-$this->fieldswidth'>\n";
     $res .= "      <textarea";
     $res .= " name='$this->formName"."[";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."]'";
@@ -734,7 +746,7 @@ class formfield
     if (isset ($this->errors))
       $res .= " has-".$this->errors[0];
     $res .= "'>\n";
-    $res .= "    <label class='col-sm-2 control-label' for='".
+    $res .= "    <label class='col-sm-$this->titlewidth control-label' for='".
             $this->formName."_";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."'";
     if (isset ($this->hidden) && $this->hidden !== FALSE)
@@ -746,7 +758,7 @@ class formfield
     else
       $res .= " ";
     $res .= "</label>\n";
-    $res .= "    <div class='col-sm-10'>\n";
+    $res .= "    <div class='col-sm-$this->fieldswidth'>\n";
     $res .= "      <input type='text'";
     $res .= " name='$this->formName"."[";
     $res .= htmlspecialchars ($this->name, ENT_QUOTES)."]'";