div断行防止内容在一行上超出div宽度
overflow:hidden; word-break: break-all; word-wrap:break-word;
清除浮动
.clearfix:after { content:""; display: block; clear:both; }
table border
table {
border-collapse: collapse;
}
th {
background-color: #a7c942;
margin:10px;
padding: 10px;
}
table,tr,td,th {
border: 1px solid #a7c942
padding:10px 30px 10px 10px;
}