How to solve such a task with layout?

Question

css

Good time of day. How to remove the indent on the right?
https://codepen.io/Sergey_t/pen/jOENxep

Answer 1

Try fixing .gutter-sizer

.gutter-sizer{
  width: 5%;
}

Gutter-sizer width calculation:(100% - 30% * 3) / 2 = 5%