how to put aside with display flex on top code example
Example 1: flexbox css
.container {
align-content: flex-start | flex-end | center | space-between | space-around | space-evenly | stretch | start | end | baseline | first baseline | last baseline + ... safe | unsafe;
}
Example 2: flexbox
Please read flexbox & grid in CSS TRIX,
make hands-on project watching (WESBOS videos - it's really useful)
also try [FLEXBOX - froggy] and [GRID - garden] games