
To change text in Manage Cookies Popup.
You can use this code to Custom CSS box
/* Manage Cookies */
.manage-cookies-overlay h3 {
visibility: hidden;
}
.manage-cookies-overlay h3:before {
content: "New Title";
visibility: visible;
}
/* Necessary */
.category-selection:nth-child(2) h4 span {
visibility: hidden;
}
.category-selection:nth-child(2) h4 span:before {
visibility: visible;
content: "New necessary text";
}
/* Always on */
.category-selection:nth-child(2) p {
visibility: hidden;
}
.category-selection:nth-child(2) p:before {
visibility: visible;
content: "new always on text";
}
p.category-description[id*="r1"] {
visibility: hidden;
}
p.category-description[id*="r1"]:before {
visibility: visible;
content: "new neccessary description text";
}
/* Performance and analytics */
.category-selection:nth-child(5) h4 span {
visibility: hidden;
}
.category-selection:nth-child(5) h4 span:before {
visibility: visible;
content: "New performance text";
}
p.category-description[id*="r2"] {
visibility: hidden;
}
p.category-description[id*="r2"]:before {
visibility: visible;
content: "new performance description text";
}
/* Advertising */
.category-selection:nth-child(8) h4 span {
visibility: hidden;
}
.category-selection:nth-child(8) h4 span:before {
visibility: visible;
content: "New advertising text";
}
p.category-description[id*="r3"] {
visibility: hidden;
}
p.category-description[id*="r3"]:before {
visibility: visible;
content: "new advertising description text";
}

Result:
