Fix truncated button icons on Safari

Removing margin offset to fix issue with button icons being
visually truncated on Safari. Removing additional redundant
code around same icon/buttons.

Signed-off-by: Yoshie Muranaka <yoshiemuranaka@gmail.com>
Change-Id: Ie1ef89023a043a70a0126a21be57febb9afae19a
diff --git a/app/common/styles/base/buttons.scss b/app/common/styles/base/buttons.scss
index 1e2b799..bd7207d 100644
--- a/app/common/styles/base/buttons.scss
+++ b/app/common/styles/base/buttons.scss
@@ -53,7 +53,6 @@
     display: inline-block;
     margin-right: 0.3em;
     vertical-align: bottom;
-    margin-left: -0.5em;
   }
   img {
     width: 1.5em;
diff --git a/app/common/styles/elements/modals.scss b/app/common/styles/elements/modals.scss
index 3132934..8481e22 100644
--- a/app/common/styles/elements/modals.scss
+++ b/app/common/styles/elements/modals.scss
@@ -125,10 +125,6 @@
 .uib-modal.in .modal-dialog {
   transform: translate(0, 10vh);
   margin-top: 50px;
-  .icon__close {
-    margin: 0;
-    padding: 0;
-  }
   .modal-content {
     border-radius: 0;
     border-color: $primary-dark;
@@ -144,12 +140,6 @@
   .modal-header {
     display: block;
   }
-  .btn--close {
-    padding: 0;
-    svg {
-      height: 1.6em;
-    }
-  }
 }
 
 .uib-modal {
diff --git a/app/configuration/styles/snmp.scss b/app/configuration/styles/snmp.scss
index a249118..6e99c80 100644
--- a/app/configuration/styles/snmp.scss
+++ b/app/configuration/styles/snmp.scss
@@ -9,6 +9,6 @@
     padding-right: 1.5rem;
   }
   .btn-add-manager {
-    padding: 0;
+    padding-left: 0;
   }
 }