body,html,form{
    font-family: "SimKai", "Noto Serif SC", serif, Arial, Tahoma, "Segoe UI Light", "Courier New"; 
    font-size: 16px;
    background-image: url("http://tuyetky.com/39/images/canbg.gif");
}

#main{
    padding: 0px 3px 3px 3px; /*Trên, trái, dưới, phải */
}

table { border-collapse: collapse; 
width: 100%; 
font-family: "SimKai", "Noto Serif SC", serif, Tahoma, "Segoe UI Light", "Courier New";      
}

  form {
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
  }

input[type=text],
input[type=date],
input[type=password],
input[type=email],
input[type=url],
input[type=number],
textarea,
select {
    width: 98%;
    padding: 3px 3px;
    margin: 1px 0;
    display: inline-block;
    border: 1px solid #ccc;
    border-radius: 3px;
    box-sizing: border-box;
}

input:focus,
textarea:focus,
select:focus {
    background-color: #d0eff4;
}
label { 
  display:inline-block; 
  margin:5px 0; 
  white-space: nowrap;
}