fixed sensor columns to stay aligned and not wrap at smaller screen sizes

Change-Id: I44f352f6976627c51700583c05d9ce0696f14541
Signed-off-by: Michael Davis <michael.s.davis@ibm.com>
diff --git a/app/server-health/styles/sensors.scss b/app/server-health/styles/sensors.scss
index 6152683..f99a499 100644
--- a/app/server-health/styles/sensors.scss
+++ b/app/server-health/styles/sensors.scss
@@ -92,9 +92,16 @@
     margin: 0;
     @include mediaQuery(medium) {
       background: $thresh-normal;
+      padding: .7em .3em;
+      margin-left: 10px;
+      min-width: 109px;
+    }
+    @include mediaQuery(large) {
+      background: $thresh-normal;
       padding: .7em 1em;
       margin-left: 10px;
       margin-right: 10px;
+      min-width: 130px;
     }
     .sensor__label {
       font-weight: 700;