fix(MdSelect): dropdown icon align with input on botton line variant (#1600)

Author: shafimsp

src/components/MdField/MdField.vue

@@ -286,6 +286,7 @@
 
   .md-field.md-field-bottom-line {
     min-height: 48px;
+    padding-top: 16px;
 
     &:before,
     &:after {
@@ -313,8 +314,7 @@
 
     .md-input,
     .md-textarea, {
-      height: 48px;
-      padding: 12px 0 0;
+      height: 32px;
       font-size: 16px;
       line-height: 32px;
     }
@@ -581,6 +581,7 @@
   .md-field.md-field-bottom-line.md-dense {
     margin: 8px 0 24px;
     min-height: 40px;
+    padding-top: 16px;
 
     label {
       top: 18px;
@@ -589,8 +590,9 @@
 
     .md-input,
     .md-textarea {
-      height: 40px;
-      padding: 18px 0 7px;
+      height: 24px;
+      padding: 0 0 4px;
+      line-height: 20px;
     }
 
     .md-textarea {