.Ctn1
{
    background-image: url(Images/containerStatus0101.png) !important;
}

.Ctn2
{
    background-image: url(Images/containerStatus0201.png) !important;
}

.Ctn3
{
    background-image: url(Images/containerStatus0301.png) !important;
}

.Ctn4
{
    background-image: url(Images/containerStatus0401.png) !important;
}

.Ctn5
{
    background-image: url(Images/containerStatus0501.png) !important;
}