html {
	font-size: 16px;
}
body {
	margin: 0;
	font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', 'Microsoft Yahei', sans-serif;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}
view,
image,
text {
	box-sizing: border-box;
	flex-shrink: 0;
}
#app {
	width: 100vw;
	height: 100vh;
}
.flex-row {
	display: flex;
	flex-direction: row;
}
.flex-col {
	display: flex;
	flex-direction: column;
}
.justify-start {
	display: flex;
	justify-content: flex-start;
}
.justify-center {
	display: flex;
	justify-content: center;
}
.justify-end {
	display: flex;
	justify-content: flex-end;
}
.justify-evenly {
	display: flex;
	justify-content: space-evenly;
}
.justify-around {
	display: flex;
	justify-content: space-around;
}
.justify-between {
	display: flex;
	justify-content: space-between;
}
.items-start {
	display: flex;
	align-items: flex-start;
}
.items-center {
	display: flex;
	align-items: center;
}
.items-end {
	display: flex;
	align-items: flex-end;
}