.form {
 width: 300px;
 border: 1px solid green;
 padding: 20px;
 margin: 0 auto;
 font-weight: 700px;
 background-position: #ff9900;
}
.form input {
 width: 100%;
 padding: 10px 0;
}
.dangnhap {
width: 600px;
margin: 10px auto;
}
input[type=text], input[type=password] {
width: 100%;
padding: 12px 20px;
margin: 8px 0;
display: inline-block;
border: 1px solid #ccc;
box-sizing: border-box;
}
   
.button {
background-color: #4CAF50;
color: white;
padding: 14px 20px;
margin: 8px 0;
border: none;
cursor: pointer;
width: 100%;
}
   
.button:hover {
opacity: 0.8;
}