flex布局实现左侧宽度固定，右边占满剩余宽度

左侧宽度固定，右边占满剩余宽度

<div class="ppp">
	<div class="left">
	A
	div>
	<div class="right">
	B
	div>
div>
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.ppp {
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	flex-wrap: nowrap;
	overflow: hidden;
}
.left {
	width: 300px;
	flex-shrink: 0;
}
.right {
	width: 100%;
}
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