Little adjustment on the big banner buttons

css/tarteaucitron.css

@@ -479,6 +479,13 @@ div#tarteaucitronServices {
 /***
  * Big alert
  */
+@media screen and (max-width: 900px) {
+	div#tarteaucitronAlertBig button {
+	    margin: 0 auto 10px!important;
+	    display: block!important;
+	}
+}
+
 .tarteaucitronAlertBigTop {
     top: 0;
 }

tarteaucitron.js

@@ -267,7 +267,7 @@ var tarteaucitron = {
                 // css for new middle bar
                 if (tarteaucitron.orientation === 'middle') {
                     var customThemeMiddle = document.createElement('style'),
-                        cssRuleMiddle = 'div#tarteaucitronRoot.tarteaucitronBeforeVisible:before {content: \'\';position: fixed;width: 100%;height: 100%;background: white;top: 0;left: 0;z-index: 999;opacity: 0.5;}div#tarteaucitronAlertBig:before {content: \'' + tarteaucitron.lang.middleBarHead + '\';font-size: 50px;}body #tarteaucitronRoot div#tarteaucitronAlertBig {width: 60%;min-width: 285px;height: auto;margin: auto;left: 50%;top: 50%;transform: translate(-50%, -50%);box-shadow: 0 0 9000px #000;border-radius: 20px;padding: 50px 0;}span#tarteaucitronDisclaimerAlert {padding: 0 30px;}#tarteaucitronRoot span#tarteaucitronDisclaimerAlert {margin: 50px 0;display: block;text-align: center;font-size: 21px;}';
+                        cssRuleMiddle = 'div#tarteaucitronRoot.tarteaucitronBeforeVisible:before {content: \'\';position: fixed;width: 100%;height: 100%;background: white;top: 0;left: 0;z-index: 999;opacity: 0.5;}div#tarteaucitronAlertBig:before {content: \'' + tarteaucitron.lang.middleBarHead + '\';font-size: 50px;}body #tarteaucitronRoot div#tarteaucitronAlertBig {width: 60%;min-width: 285px;height: auto;margin: auto;left: 50%;top: 50%;transform: translate(-50%, -50%);box-shadow: 0 0 9000px #000;border-radius: 20px;padding: 35px 25px;}span#tarteaucitronDisclaimerAlert {padding: 0 30px;}#tarteaucitronRoot span#tarteaucitronDisclaimerAlert {margin: 50px 0;display: block;text-align: center;font-size: 21px;}';
 
                     customThemeMiddle.type = 'text/css';
                     if (customThemeMiddle.styleSheet) {