.flex{
	display: flex;
	align-items: center;
}
.flex-row-center{
	display: flex;
	justify-content: center;
}
.flex-all-center{
	display: flex;
	justify-content: center;
	align-items: center;
}
.flex-between{
	display: flex;
	justify-content: space-between;
}
.flex-evenly{
	display: flex;
	justify-content: space-evenly;
}

.relative{
	position: relative;
}
.absolute{
	position: absolute;
}