Social Shares on pages

New to Customizr and very impressed. Faced with the challenge of adding Social Share icons to every page below the page content (except front page and contact page), I found a pretty simple solution using the extensive hooks available. It works well, but would appreciate improvements/comments. Thanks and great community!

To my child theme functions.php I added:

// Add social shares after the container
add_action( '__after_main_container' , 'add_social_shares' );
function add_social_shares() {
// If we're on the home page or contact page, do nothing
  if ( is_front_page() || is_page( 'contact-us' ) )
    return;
  ?>
  <div class="share-social-block">
  <span style="font-size: 14px; font-style: italic;">Share it on</span>
 <!--  Add Social Share icons -->
  <a class="social-icon icon-facebook" style="text-decoration:none;" title="Share this on Facebook" href="https://www.facebook.com/share.php?u=<?php the_permalink(); ?>" onclick="javascript:window.open(this.href,'', 'menubar=1,resizable=1,width=900,height=500');return false;"></a>

<a class="social-icon icon-google" onclick="javascript:window.open(this.href,'', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;" href="https://plus.google.com/share?url=<?php echo get_permalink(); ?>" style="text-decoration:none;" title="Share this on Google+"" ></a>

<a class="social-icon icon-twitter"  onclick="javascript:window.open(this.href,'', 'menubar=1,resizable=1,width=600,height=400');return false;" href="https://twitter.com/intent/tweet?text=My+New+Shiny+Website&url=<?php echo get_permalink(); ?>" style="text-decoration:none;" title="Share this on Twitter" ></a>
</div>
<?php }

To my child theme CSS I added:

.share-social-block {
  float: right;
}
.share-social-block a::before {
    font-family: genericons;
    font-variant: normal;
    font-weight: 400;
    line-height: 1;
    text-transform: none;
}
.share-social-block a {
    background: none repeat scroll 0 0 rgba(0, 0, 0, 0);
    color: #5a5a5a;
    display: inline;
    font-size: 1.4em !important;
    height: inherit;
    line-height: inherit;
    margin: 0;
    opacity: 0.8;
    padding-right: 13px;
    position: relative;
    text-decoration: none;
    text-shadow: none;
    top: 2px;
    vertical-align: inherit;
    width: inherit;
}