grunt

dist/css/bootstrap-flex.css

@@ -2575,7 +2575,26 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
           flex-flow: row wrap;
 }
 
+.form-inline .form-check {
+  width: 100%;
+}
+
 @media (min-width: 576px) {
+  .form-inline label {
+    display: -webkit-box;
+    display: -webkit-flex;
+    display: -ms-flexbox;
+    display: flex;
+    -webkit-box-align: center;
+    -webkit-align-items: center;
+        -ms-flex-align: center;
+            align-items: center;
+    -webkit-box-pack: center;
+    -webkit-justify-content: center;
+        -ms-flex-pack: center;
+            justify-content: center;
+    margin-bottom: 0;
+  }
   .form-inline .form-group {
     display: -webkit-box;
     display: -webkit-flex;
@@ -2606,10 +2625,21 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
     vertical-align: middle;
   }
   .form-inline .form-check {
-    display: inline-block;
+    display: -webkit-box;
+    display: -webkit-flex;
+    display: -ms-flexbox;
+    display: flex;
+    -webkit-box-align: center;
+    -webkit-align-items: center;
+        -ms-flex-align: center;
+            align-items: center;
+    -webkit-box-pack: center;
+    -webkit-justify-content: center;
+        -ms-flex-pack: center;
+            justify-content: center;
+    width: auto;
     margin-top: 0;
     margin-bottom: 0;
-    vertical-align: middle;
   }
   .form-inline .form-check-label {
     padding-left: 0;
@@ -2618,6 +2648,27 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
     position: relative;
     margin-left: 0;
   }
+  .form-inline .custom-control {
+    padding-left: 0;
+    display: -webkit-box;
+    display: -webkit-flex;
+    display: -ms-flexbox;
+    display: flex;
+    -webkit-box-align: center;
+    -webkit-align-items: center;
+        -ms-flex-align: center;
+            align-items: center;
+    -webkit-box-pack: center;
+    -webkit-justify-content: center;
+        -ms-flex-pack: center;
+            justify-content: center;
+  }
+  .form-inline .custom-control-indicator {
+    position: static;
+    display: inline-block;
+    margin-right: .25rem;
+    vertical-align: text-bottom;
+  }
   .form-inline .has-feedback .form-control-feedback {
     top: 0;
   }

dist/css/bootstrap.css

@@ -2313,6 +2313,9 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
 }
 
 @media (min-width: 576px) {
+  .form-inline label {
+    margin-bottom: 0;
+  }
   .form-inline .form-group {
     display: inline-block;
     vertical-align: middle;
@@ -2345,9 +2348,10 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
   }
   .form-inline .form-check {
     display: inline-block;
+    vertical-align: middle;
+    width: auto;
     margin-top: 0;
     margin-bottom: 0;
-    vertical-align: middle;
   }
   .form-inline .form-check-label {
     padding-left: 0;
@@ -2356,6 +2360,15 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
     position: relative;
     margin-left: 0;
   }
+  .form-inline .custom-control {
+    padding-left: 0;
+    vertical-align: middle;
+  }
+  .form-inline .custom-control-indicator {
+    position: static;
+    display: inline-block;
+    vertical-align: text-bottom;
+  }
   .form-inline .has-feedback .form-control-feedback {
     top: 0;
   }

docs/dist/css/bootstrap-flex.css

@@ -2565,11 +2565,49 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
   background-image: url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='%23d9534f' viewBox='-2 -2 7 7'%3E%3Cpath stroke='%23d9534f' d='M0 0l3 3m0-3L0 3'/%3E%3Ccircle r='.5'/%3E%3Ccircle cx='3' r='.5'/%3E%3Ccircle cy='3' r='.5'/%3E%3Ccircle cx='3' cy='3' r='.5'/%3E%3C/svg%3E");
 }
 
+.form-inline {
+  display: -webkit-box;
+  display: -webkit-flex;
+  display: -ms-flexbox;
+  display: flex;
+  -webkit-flex-flow: row wrap;
+      -ms-flex-flow: row wrap;
+          flex-flow: row wrap;
+}
+
+.form-inline .form-check {
+  width: 100%;
+}
+
 @media (min-width: 576px) {
-  .form-inline .form-group {
-    display: inline-block;
+  .form-inline label {
+    display: -webkit-box;
+    display: -webkit-flex;
+    display: -ms-flexbox;
+    display: flex;
+    -webkit-box-align: center;
+    -webkit-align-items: center;
+        -ms-flex-align: center;
+            align-items: center;
+    -webkit-box-pack: center;
+    -webkit-justify-content: center;
+        -ms-flex-pack: center;
+            justify-content: center;
+    margin-bottom: 0;
+  }
+  .form-inline .form-group {
+    display: -webkit-box;
+    display: -webkit-flex;
+    display: -ms-flexbox;
+    display: flex;
+    -webkit-box-flex: 0;
+    -webkit-flex: 0 0 auto;
+        -ms-flex: 0 0 auto;
+            flex: 0 0 auto;
+    -webkit-flex-flow: row wrap;
+        -ms-flex-flow: row wrap;
+            flex-flow: row wrap;
     margin-bottom: 0;
-    vertical-align: middle;
   }
   .form-inline .form-control {
     display: inline-block;
@@ -2580,27 +2618,28 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
     display: inline-block;
   }
   .form-inline .input-group {
-    display: inline-table;
     width: auto;
-    vertical-align: middle;
-  }
-  .form-inline .input-group .input-group-addon,
-  .form-inline .input-group .input-group-btn,
-  .form-inline .input-group .form-control {
-    width: auto;
-  }
-  .form-inline .input-group > .form-control {
-    width: 100%;
   }
   .form-inline .form-control-label {
     margin-bottom: 0;
     vertical-align: middle;
   }
   .form-inline .form-check {
-    display: inline-block;
+    display: -webkit-box;
+    display: -webkit-flex;
+    display: -ms-flexbox;
+    display: flex;
+    -webkit-box-align: center;
+    -webkit-align-items: center;
+        -ms-flex-align: center;
+            align-items: center;
+    -webkit-box-pack: center;
+    -webkit-justify-content: center;
+        -ms-flex-pack: center;
+            justify-content: center;
+    width: auto;
     margin-top: 0;
     margin-bottom: 0;
-    vertical-align: middle;
   }
   .form-inline .form-check-label {
     padding-left: 0;
@@ -2609,6 +2648,27 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
     position: relative;
     margin-left: 0;
   }
+  .form-inline .custom-control {
+    padding-left: 0;
+    display: -webkit-box;
+    display: -webkit-flex;
+    display: -ms-flexbox;
+    display: flex;
+    -webkit-box-align: center;
+    -webkit-align-items: center;
+        -ms-flex-align: center;
+            align-items: center;
+    -webkit-box-pack: center;
+    -webkit-justify-content: center;
+        -ms-flex-pack: center;
+            justify-content: center;
+  }
+  .form-inline .custom-control-indicator {
+    position: static;
+    display: inline-block;
+    margin-right: .25rem;
+    vertical-align: text-bottom;
+  }
   .form-inline .has-feedback .form-control-feedback {
     top: 0;
   }

docs/dist/css/bootstrap.css

@@ -2313,10 +2313,13 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
 }
 
 @media (min-width: 576px) {
+  .form-inline label {
+    margin-bottom: 0;
+  }
   .form-inline .form-group {
     display: inline-block;
-    margin-bottom: 0;
     vertical-align: middle;
+    margin-bottom: 0;
   }
   .form-inline .form-control {
     display: inline-block;
@@ -2327,8 +2330,8 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
     display: inline-block;
   }
   .form-inline .input-group {
-    display: inline-table;
     width: auto;
+    display: inline-table;
     vertical-align: middle;
   }
   .form-inline .input-group .input-group-addon,
@@ -2345,9 +2348,10 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
   }
   .form-inline .form-check {
     display: inline-block;
+    vertical-align: middle;
+    width: auto;
     margin-top: 0;
     margin-bottom: 0;
-    vertical-align: middle;
   }
   .form-inline .form-check-label {
     padding-left: 0;
@@ -2356,6 +2360,15 @@ select.form-control-lg:not([size]):not([multiple]), .input-group-lg > select.for
     position: relative;
     margin-left: 0;
   }
+  .form-inline .custom-control {
+    padding-left: 0;
+    vertical-align: middle;
+  }
+  .form-inline .custom-control-indicator {
+    position: static;
+    display: inline-block;
+    vertical-align: text-bottom;
+  }
   .form-inline .has-feedback .form-control-feedback {
     top: 0;
   }