tdf#119415 Widen search box and style placeholder

Change-Id: I0f60cfea338e695e778d16a208153597ec6d19ca
(cherry picked from commit ad162dec44f8dc15cfa7405cba597b76cba8b3bd)
Reviewed-on: https://gerrit.libreoffice.org/63828
Tested-by: Jenkins
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
Tested-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
diff --git a/help3xsl/default.css b/help3xsl/default.css
index 6fee232..e6a59ad 100644
--- a/help3xsl/default.css
+++ b/help3xsl/default.css
@@ -580,6 +580,11 @@
}
#search-bar {
    margin-top: 10px;
    width: 100%;
    caret-color: #148603;
}
#search-bar::placeholder {
    font-style: italic;
}
.google-search {
    max-width: 300px;
@@ -793,9 +798,6 @@
        padding: 10px 50px;
        width: 800px;
    }
    #search-bar {
        max-width: 290px;
    }
}
@media screen and (min-width: 1440px) {
    #Contents {