body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,
form,fieldset,input,textarea,p,blockquote,th,td {
       padding: 0;
       margin: 0;
}
table {
       border-collapse: collapse;
       border-spacing: 0;
}
fieldset,img {
       border: 0;
}
address,caption,cite,code,dfn,em,strong,th,var{
      
}
ol,ul {
       list-style: none;
}
caption,th {
       text-align: left;
}
h1,h2,h3,h4,h5,h6 {
     
}
q:before,q:after {
       content:'';
}
abbr,acronym { 
       border: 0;
       }
.clear{
       clear:both;
       /*清除浮动*/
}