[US RABB-594] Snackbar redesign & delete unused styleSheet

ui/ui-frontend-common/src/sass/_explorer-banner.scss

-.explorer-banner {
-    border-radius: 5px;
-    background-color: white;
-    margin-top: 80px;
-    display: flex;
-
-    .back-button {
-        padding: 30px;
-        display: flex;
-        align-items: center;
-        cursor: pointer;
-        border-right: 1px solid $pale-grey;
-
-        > i {
-            font-size: 18px;
-            color: var(--vitamui-primary);
-            background: #e7f5f2;
-            border-radius: 15px;
-            width: 30px;
-            height: 30px;
-            text-align: center;
-            line-height: 30px;
-            transition: color .2s ease-out,background-color .2s ease-out;
-        }
-
-        &:hover > i {
-            background-color: var(--vitamui-primary);
-            color: $white;
-        }
-    }
-
-    .explorer-banner-container {
-        display: flex;
-        flex-grow: 1;
-
-        .explorer-banner-content {
-            padding: 30px;
-            flex-grow: 1;
-            display: flex;
-            justify-content: center;
-            flex-direction: column;
-
-            .explorer-banner-header {
-                display: flex;
-                align-items: center;
-
-                .explorer-banner-icon {
-                    padding-right: 10px;
-
-                    i.vitamui-icon {
-                        font-size: 30px;
-                        color: #666666;
-                    }
-                }
-
-                .explorer-banner-date,
-                .explorer-banner-title-bold {
-                    font-size: 20px;
-                    font-weight: 500;
-                    padding: 0 10px;
-                }
-
-                .explorer-banner-title {
-                    font-size: 20px;
-                    font-weight: 300;
-                    flex-grow: 1;
-                    padding: 0 10px;
-                }
-
-            }
-
-        }
-
-        .explorer-banner-actions {
-            padding: 30px 50px;
-            display: flex;
-            align-items: center;
-
-            .btn-download {
-                margin-right: 20px;
-                display: flex;
-                align-items: center;
-                text-decoration: none;
-
-                > i {
-                    margin-right: 10px;
-                }
-
-                &.disabled {
-                    opacity: 0.4;
-                }
-            }
-
-            .btn-circle-large {
-                width: 50px;
-                height: 50px;
-
-                > i {
-                    font-size: 34px;
-                }
-            }
-        }
-    }
-}

ui/ui-frontend-common/src/sass/material/_snack-bar.scss

 .vitamui-snack-bar.mat-snack-bar-container {
-    font-size: 14px;
-    font-weight: bold;
+    font-size: 16px;
     color: white;
     background: var(--vitamui-primary);
     max-width: none;
     width: 100vw;
     margin: 0;
     border-radius: 0;
+    padding: 22px 120px;
 }
 
 .vitamui-snack-bar-container {
@@ -26,20 +26,20 @@
 
     > i {
         color: white;
-        opacity: 0.5;
         font-size: 36px;
     }
 }
 
 .vitamui-snack-bar-content {
-    font-size: 14px;
-    font-weight: bold;
     color: white;
     vertical-align: middle;
+    display: flex;
+    align-items: center;
 
     > i.vitamui-icon {
         color: white;
-        margin-right: 10px;
+        margin-right: 20px;
+        font-size: 23px;
     }
 
     a {
@@ -56,7 +56,7 @@
     outline: none;
     cursor: pointer;
     padding: 10px;
-    font-size: 14px;
+    font-size: 16px;
 }
 
 // SUBROGATION SNACKBAR CSS