.hive-section.innerframe-1500 ul.main-program li:nth-of-type(1) {
    background-color: #F7FBFC; 
}
.hive-section.innerframe-1500 ul.main-program li:nth-of-type(2) {
    background-color: #E5EFF7; 
}
.hive-section.innerframe-1500 ul.main-program li:nth-of-type(3) {
    background-color: #DBE5F1; 
}
.hive-section.innerframe-1500 ul.main-program li:nth-of-type(4) {
    background-color: #B6CCE4; 
}