<div class="carousel slide center-block" style="width: 900px;">
Change to:
<div class="carousel slide center-block" style="width: 900px; max-width: 100%;">
<div class="carousel slide center-block" style="width: 900px;">
Change to:
<div class="carousel slide center-block" style="width: 900px; max-width: 100%;">