How to make blocks in the center?

Question

css

Hello!
There is a one-page - t5.ruksa.ru
Please tell me how to make blocks in the second row of the "Services" section in the middle.
CSS - t5.ruksa.ru/css/style.css

Answer 1

You can write it specifically for this case like this:

.gallery-list {
    text-align: center;
}
.gallery-list li.grid_13 {
    display: inline-flex;
    float: none;
    margin: auto; 
}

It can be written in the same way, but for all nested li, but with indentation.
PS The solution was checked only in chrome.

Answer 2

flexbox

Answer 3

display: flex;
justify-content: center;

Answer 4

This is for example, and by the way adaptive but see: sandbox