Update position of the close button wrt to the main container

Author: g1eb

src/date-input.css

@@ -268,6 +268,7 @@
   position: absolute;
   z-index: 5;
   left: -1px;
+  bottom: -2.5em;
   cursor: pointer;
   outline: none;
   border-top: 1px solid #aaa;

src/datetime-input.css

@@ -378,6 +378,7 @@
   position: absolute;
   z-index: 5;
   left: -1px;
+  bottom: -2.5em;
   cursor: pointer;
   outline: none;
   border-top: 1px solid #aaa;

src/time-input.css

@@ -265,6 +265,7 @@
   position: absolute;
   z-index: 5;
   left: -1px;
+  bottom: -2.5em;
   cursor: pointer;
   outline: none;
   border-top: 1px solid #aaa;