CSS reset

html,body,h1,h2,h3,h4,h5,h6,form,dl,dd{
    margin:0;
}
th,td{
    padding:0;
}
input,textarea,ol,ul{
    margin:0;
    padding:0;
}
textarea{
    resize: none;
    overflow: auto;
}
img{
    border: none;
    vertical-align: top;
}
a{
　　text-decoration:none;
}
li{
　　list-style:none;
}