#MainPage
{
    padding: 10px 10px 10px 10px;
    background-color: #FFFFFF;
}

.mainpage-imgs
{
    margin-bottom: 10px;
    width: 50%;
    clear: both;
}

#MainPage .mainpage-imgs
{
    margin-left: auto;
    margin-right: auto;
    display: block;
}

.mainpage-imgs:hover
{
    opacity: 0.7;
}