display: grid;
grid-template-columns: repeat(12, 1fr);
grid-template-rows: repeat(15, 1fr);
gap: 0 0;
}
header {
grid-area: 1 / 1 / 2 / 13;
width: 100%;
position: sticky;
top: 0;
display: grid;
grid-template-columns: repeat(12, 1fr);
grid-template-rows: 70px;
grid-template-areas: ". home notes group . search search . . login signup .";
}
但是 header 元素堆积在一个格子里面，我希望 header 元素占据第一行
