Code:
<!DOCTYPE html>
<html>

<head>

<style>
#wrapper {
    width: 2200px;
    transform: translate3d(0, 0, 0);
     transition: transform .5s ease-in-out;
}

.content {
    float: left;
    width: 550px;
    height: 350px;
    white-space: normal;
    background-repeat: no-repeat;
}
#contentContainer
...