add     width: 800px;     margin: auto;
add     width: 800px;
    margin: auto;

cnfeat/cnfeat.github.io,alex1990218/alex1990218.github.io,2015214115/2015214115.github.io,2015214115/2015214115.github.io,cnfeat/cnfeat.github.io,alex1990218/alex1990218.github.io