/*样式格式化*/
html, body, div, span, applet, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, a, abbr, acronym, address, big, cite, code, del, dfn, em, font, img, ins, kbd, q, s, samp, small, strike,
strong, sub, sup, tt, var, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody,
tfoot, thead, tr, th, td ,textarea,input { margin:0; padding:0;  }
address,cite,dfn,em,var, i {font-style:normal;}
body {font-size: 16px; font-family:'Microsoft Yahei','simsun','arial','tahoma';  color: #222; min-width: 1200px;}
table { border-collapse:collapse; border-spacing:0; }
h1, h2, h3, h4, h5, h6, th { font-size: 100%; font-weight: normal; }
button,input,select,textarea{font-size:100%; outline: none;}
input:-webkit-autofill {-webkit-box-shadow: 0 0 0 100px white inset !important;}
fieldset,img{border:0};
a { text-decoration: none; background: none }
a:link{text-decoration:none};  /* 指正常的未被访问过的链接*/

a:visited{text-decoration:none}; /*指已经访问过的链接*/

a:hover{text-decoration:none};  /*指鼠标在链接*/

a:active{text-decoration:none};  /* 指正在点的链接*/ 


ul, ol, li { list-style: none; }

img{vertical-align: middle; border: 0;}

div{outline: none;}

.row{
  text-align: center;
  height: 100px;
  margin-top: 10px;
  margin-right: 10px;
  /* background: red */
}
.col4{
  background: green;
  margin-left: 10px;
}
.col5{
  background: tomato
}