table{
width: 100%;
border-color: #dfdfdf;
border-collapse: collapse;
}
table tr td{
text-align: center;
padding:0.5rem 0;
border-color: #dfdfdf;
border:1px solid #dfdfdf;
}
<table class="zzsj_table" cellpadding="0" cellspacing="0" border="1" >