方案1：使用flex来布局

.box{
       width: 100%;    height: 100px;    display: flex;}.d1{
       flex-grow: 1;    flex-shrink: 1;}.d2{
       flex-basis: 1080px;    background-color: pink;                flex-grow: 0;    flex-shrink: 0;}.d3{
       flex-grow: 1;    flex-shrink: 1;}

方案二：未完待续...