Display

display: flex;

Flex Direction

flex-direction: row;

flex-direction: column;

flex-direction: row-reverse;

flex-direction: column-reverse;

Flex Wrap

flex-wrap: wrap;

flex-wrap: nowrap;

flex-wrap: wrap-reverse;

Align Items

align-items: center;

align-items: start;

align-items: end;

align-items: flex-start;

align-items: flex-end;

Justify

justify-content: flex-start;

justify-content: flex-end;

justify-content: center;

justify-content: space-between;

justify-content: space-around;

justify-content: space-evenly;

justify-content: start;

justify-content: end;

Align Content

align-content: flex-start;

align-content: flex-end;

align-content: center;

align-content: space-between;

align-content: space-around;

align-content: space-evenly;

align-content: stretch;

Flex Grow

flex-grow: 4;

Gap, Row-Gap, Column-Gap

gap: 10px;

row-gap: 10px;

column-gap: 10px;

Align Self

align-self: auto;

align-self: flex-start;

align-self: flex-end;

align-self: center;

align-self: baseline;

YouTube

https://www.youtube.com/watch?v=Utplkj2LIBE

@media only screen and (max-width: 980px) {

.two-columns .et_pb_column {
width: 50%!important;
}
.three-columns .et_pb_column {
width: 33.33%!important;
}
.four-columns .et_pb_column {
width: 25%!important;
}
}