Changing color to blue and text to white only for two spoilers on the page not all

Hey folks,

wpmudev support is enabled.

***Instead of doing it yourself, can you review and then let me know what the solution is so we can apply direct on this one? (page is here)

See video explanation:

So, far this is added in Custom CSS plugin (at the bottom): {
background-color: #05509f !important;
} {
color: #ffffff !important;
} > .su-spoiler-title {
color: #ffffff; font-weight: normal; font-size: medium; !important;