是改這個style.css吧，
nav {
width: 100%;
background-color: #ffffff !important;
margin-top: 15px;
}
nav ul {
width: 1200px;
margin: auto;
display: flex;
justify-content: flex-start;
}
nav ul li {
height: 45px;
width: 150px !important;
position: relative;
}
nav ul li>a {
display: block;
font-size: 15px;
color: #ffffff;
line-height: 45px;
text-decoration: none;
height: 45px;
text-align: center;
transition: all .5s;
}
nav ul li>a span {
display: none;
}
nav ul li.hover>a nav ul li:hover>a {
margin-top: -8px;
padding-top: 8px;
background: #da251e;
line-height: 20px;
}
nav ul li.hover span nav ul li:hover span {
display: block;
}
nav ul li p {
display: none;
position: absolute;
top: 45px;
left: 0;
width: 100%;
z-index: 999;
transition: all .5s;
background: #da251e;
}
nav ul li p a {
display: block;
width: 100%;
font-size: 14px;
color: #ffffff;
line-height: 35px;
text-decoration: none;
text-align: center;
transition: all .5s;
}
nav ul li p a:hover {
background-color: #23439f;
color: white;
}
nav ul li p a:first-child {
margin-top: 5px;
}
nav ul li:hover p {
transition: all .5s;
display: block;
}
這里的顏色都換了個遍，寬度改成150了，主頁啥反應也沒有，咋回事，求指點