Why is the right border of the slide missing?

Question

css

Why is the right border of the slide missing?
Example , section Our partners.

Answer 1

because

.slick-list {
    overflow-x: hidden;
}

Answer 2

Lack of 1px
try

.unit-wrapper {
width: 1407px; // old-value- 1406px
}

Answer 3

.slick-list {
    margin-right: -1px; // зачем это свойство у вас?
}

Answer 4

make the width 100% and add some padding. You have a width of 93% of the integer screen width, so sometimes you get fractional values.

.slider {
    width: 100%;
    padding: 0 30px;
    margin: 0 auto;
}

then correct the arrows right, left