简单示例
.container {
display: flex;
}
.container > div {
flex: 1 1 auto;
}
容器
.container {
display: flex;
display: inline-flex;
flex-direction: row; /* ltr - default */
flex-direction: row-reverse; /* rtl */
flex-direction: column; /* top-bottom */
flex-direction: column-reverse; /* bottom-top */
flex-wrap: nowrap; /* one-line */
flex-wrap: wrap; /* multi-line */
align-items: flex-start; /* vertical-align to top */
align-items: flex-end; /* vertical-align to bottom */
align-items: center; /* vertical-align to center */
align-items: stretch; /* same height on all (default) */
justify-content: flex-start; /* horizontal alignment - default */
justify-content: flex-end;
justify-content: center;
}
子项目
.container > div {
/* This: */
flex: 1 0 auto;
/* Is equivalent to this: */
flex-grow: 1;
flex-shrink: 0;
flex-basis: auto;
order: 1;
align-self: flex-start; /* left */
margin-left: auto; /* right */
}
Tricks
垂直居中
.container {
display: flex;
}
.container > div {
width: 100px;
height: 100px;
margin: auto;
}
垂直居中(2)
.container {
display: flex;
align-items: center; /* vertical */
justify-content: center; /* horizontal */
}
Reordering
.container > .top {
order: 1;
}
.container > .bottom {
order: 2;
}
移动端布局
.container {
display: flex;
flex-direction: column;
}
.container > .top {
flex: 0 0 100px;
}
.container > .content {
flex: 1 0 auto;
}
A fixed-height top bar and a dynamic-height content area.
Table-like
.container {
display: flex;
}
/* the 'px' values here are just suggested percentages */
.container > .checkbox { flex: 1 0 20px; }
.container > .subject { flex: 1 0 400px; }
.container > .date { flex: 1 0 120px; }
This creates columns that have different widths, but size accordingly according to the circumstances.
垂直
.container {
align-items: center;
}
垂直居中所有项目
Left and right
.menu > .left { align-self: flex-start; }
.menu > .right { align-self: flex-end; }