#s1{
    display: block;
    width: 100%;
}
#canh1,
#canh2,
#canh3,
#canh4,
#canh5,
#canh6,
#canh7,
#canh8,
#canh9
{
    display: block;
    width: 100%;
}
#canh1-wrap,
#canh2-wrap,
#canh3-wrap,
#canh4-wrap,
#canh5-wrap,
#canh6-wrap,
#canh7-wrap,
#canh8-wrap,
#canh9-wrap
{
    display: block;
    width: 100%;
    height: 100%;
    margin-top: 15px;
    margin-bottom: 5px;
}