main{
    width: 100%;
    margin-top: 30px;
    flex-wrap: wrap;/*弹性换行*/
    /* background-color: khaki; */
}
main > ul:first-of-type{
    display: flex;/*弹性盒模型*/
    position: relative;/*相对定位*/
    width: 1483px;
    height: 90px;
    margin-bottom: 60px;
    /* background-color: rgb(0, 0, 0); */
}
.design-title{
    position: absolute;/* 绝对定位 */
    top: 13px;
    width: 64px;
    height: 64px;
    transform: rotate(-45deg);
    /* background-color: darkgoldenrod; */
}
/* main > ul:first-of-type > li:first-of-type{
    margin-left: 18px;
    background:linear-gradient(-45deg,rgb(188, 255, 255) 0%,cyan 10%,cyan 50%,
    rgb(0, 93, 93) 50%,rgb(0, 93, 93) 100%)bottom right/407px 120px no-repeat;
} */
main > ul:first-of-type > li:nth-child(1){
    position: absolute;/* 绝对定位 */
    width: 340px;
    height: 90px;
    background:linear-gradient(90deg,cyan 0%,cyan 10%,
    rgb(0, 194, 194) 50%,rgb(0, 93, 93) 100%)bottom right/340px 90px no-repeat;
}
main > ul:first-of-type > li:nth-child(2){
    left: 309px;
    z-index:-1;/* 定位层级 */
    background:linear-gradient(-45deg,rgb(0, 93, 93) 0%,rgb(0, 93, 93) 40%,rgb(0, 93, 93) 50%,
    rgb(0, 93, 93) 60%,rgb(0, 60, 60) 100%)bottom right/305px 90px no-repeat;
}
main > ul:first-of-type > li:nth-child(3){
    position: absolute;/* 绝对定位 */
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    z-index:1;/* 定位层级 */
    width: 806px;
    height: 68px;
    margin: auto;
    background:linear-gradient(-45deg,rgb(0, 165, 165) 0%,rgb(0, 165, 165) 92%,
    transparent 92%,transparent 100%)top left/403px 34px no-repeat,
    linear-gradient(45deg,rgb(0, 165, 165) 0%,rgb(0, 165, 165) 92%,
    transparent 92%,transparent 100%)top right/403px 34px no-repeat,
    linear-gradient(-135deg,rgb(0, 165, 165) 0%,rgb(0, 165, 165) 92%,
    transparent 92%,transparent 100%)bottom left/403px 34px no-repeat,
    linear-gradient(135deg,rgb(0, 165, 165) 0%,rgb(0, 165, 165) 92%,
    transparent 92%,transparent 100%)bottom right/403px 34px no-repeat;
    /* background-color: darkgoldenrod; */
    font-size:42px;/*字体大小*/
    color: rgb(255, 254, 254);
    line-height:62px;/*字体垂直居中*/
    text-align:center;/*字体水平居中*/
}
main > ul:first-of-type > li:nth-child(4){
    left: 1111px;
    z-index:-1;/* 定位层级 */
    background:linear-gradient(45deg,rgb(0, 93, 93) 0%,rgb(0, 60, 60) 40%,rgb(0, 93, 93) 50%,
    rgb(0, 93, 93) 50%,rgb(0, 93, 93) 100%)bottom right/305px 90px no-repeat;
}
main > ul:first-of-type > li:nth-child(5){
    width: 340px;
    height: 90px;
    background:linear-gradient(90deg,rgb(0, 93, 93) 0%,rgb(0, 93, 93) 10%,
    rgb(0, 194, 194) 50%,cyan 90%,cyan 100%)bottom right/340px 90px no-repeat;
    margin-left: 1143px;
}
/* main > ul:first-of-type > li:nth-child(7){
    left: 1801px;
    background:linear-gradient(-45deg,cyan 0%,cyan 10%,cyan 50%,
    cyan 60%,rgb(122, 255, 255) 100%)bottom right/407px 120px no-repeat;
    z-index:-1;/* 定位层级 *
} */