.vector-page-1 .v-logo{
position: absolute;
margin-left: auto;
margin-right: auto;
left: 0;
right: 0;
}
CSS position absolute 水平居中
.vector-page-1 .v-logo{
position: absolute;
margin-left: auto;
margin-right: auto;
left: 0;
right: 0;
}