Background color to summary block and twitter feed

Site URL: https://scaced.squarespace.com/

Hello, I would like to know how to add separate background colors to a summary block and a twitter feed that are all in the same section on my homepage - is this possible?

I would like the background color of the summary block to be hsl(170, 51%, 51%) and the background color of the twitter feed to be hsl(49, 100%, 50%)

Let me know if this is possible, 

Thanks!

Add to Home > Design > custom CSS

div#block-yui_3_17_2_1_1592258026945_9977 {
    background: hsl(170, 51%, 51%);
}
div#block-yui_3_17_2_1_1594752428387_21452 {
    background: hsl(49, 100%, 50%);
}