display flex column

CSS
.container {
	display: flex;
	flex-direction: column;
}/* use this if you want to center stuff like in your div */
.flexbox_card {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }/* Flex */
.anyclass {
	display:flex;
}
/* row is the Default, if you want to change choose */
.anyclass {
	display:flex;
 	flex-direction: row | row-reverse | column | column-reverse;
}

.anyclass {
  /* Alignment along the main axis */
  justify-content: flex-start | flex-end | center | space-between | space-around | space-evenly | start | end | left | right ... + safe | unsafe;
}.container {
  justify-content: flex-start | flex-end | center | space-between | space-around | space-evenly | start | end | left | right ... + safe | unsafe;
}
Source

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