要把css里的px统一换成rem.比例是1:40要怎么批量替换呢
.box {
.box-header {
padding: 2.1rem 0;
color: #393939;
text-align: center;
.title {
font-size: 34px;
font-weight: bold;
line-height: 41px;
text-align: center;
color: #333333;
}
.label {
margin-top: 18px;
font-size: 18px;
font-weight: normal;
line-height: 22px;
text-align: center;
color: #666666;
}
}
.box-content {
.buttons {
a {
margin: 0 auto;
display: block;
width: 170px;
height: 44px;
border-radius: 6px;
opacity: 1;
background: #FF7226;
text-align: center;
font-size: 16px;
font-weight: bold;
line-height: 44px;
letter-spacing: 5.33px;
color: #FFFFFF;
}
}
}
}