<title>页面标题(w3cschool.cn)</title>
html{color:#000;background:#FFF;font-family:Microsoft YaHei,sans-serif,Arial,'宋体';}
body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,fieldset,legend,input,button,textarea,p,blockquote,th,td,strong{padding:0;margin:0;font-family:Microsoft YaHei,sans-serif,Arial;}
table{border-collapse:collapse;border-spacing:0;}
a:hover{text-decoration:none;color:#cb1114};
var,em,strong{font-style:normal;}
address,caption,cite,code,dfn,em,strong,th,var, optgroup{font-style:inherit;font-weight:inherit;}
del,ins{text-decoration:none;}
caption,th{text-align:left;}
h1,h2,h3,h4,h5,h6{font-size:100%;font-weight:normal;}
q:before,q:after{content:'';}
abbr,acronym{border:0;font-variant:normal;}
sup{vertical-align:baseline;}
sub{vertical-align:baseline;}
input,button,textarea,select,optgroup,option{font-family:inherit; font-size:inherit;font-style:inherit;font-weight:inherit;}
input,button,textarea,select{*font-size:100%;}
.clear {clear:both;height:0px;overflow:hidden;}
body{-webkit-user-select:none;-webkit-text-size-adjust:none;-webkit-transform-style:preserve-3d;}
*{-webkit-tap-highlight-color:rgba(0,0,0,0);}
form{width:430px;margin:20px auto 0;}
text-justify:distribute-all-lines;
-moz-text-align-last:justify;
-webkit-text-align-last:justify;
@media screen and (-webkit-min-device-pixel-ratio:0){ div span:after{ content:"."; display: inline-block; width:100%; overflow:hidden; height:0; } }
span{float:left;width:65px;height:40px;line-height:40px;margin-right:10px;}
strong{float:left;width:140px;height:40px;line-height:40px;margin-left:10px;background:#ccf;}
input[type=text]{float:left;width:200px;height:20px;margin:10px 0;}
input[type=password]{float:left;width:200px;height:20px;margin:10px 0;}
input[type=button]{color:#00f;width:100px;height:30px;}
.reg{text-align:center;margin:20px auto 0;}
text-align: justify; width:200px; font-size:15px; color:red;
border:1px solid blue; height:18px;
<input id='username' type="text" name="" />
<input type="password" name="" />
<input type="password" name="" />
<input type="text" name="" />
<input type="button" value='点此注册' name="" />