#main {
    width: 400px;
    height: 800px;
    margin: 300px auto;
    font: 300 20px sans-serif;
}

#title {
    font-size: 30px;
}

#submit_div {
    width: 200px;
    margin: 5px auto;
}

#submit {
    font: 300 20px sans-serif;
    text-decoration: none;
    display: inline-block;
    color: white;
    background: #10bbf1;
    border: 2px solid #10bbf1;
    padding: 0 21px;
    border-radius: 5px;
    width:200px;
}

#submit:hover {
    background: #40c9f4;
    border-color: #40c9f4;
}

.input {
    outline-style: none;
    border: 1px solid #ccc;
    border-radius: 3px;
    padding: 7px 2px;
    margin:5px;
    width: 380px;
    font-size: 20px;
}

/*荧光效果*/
.input:focus {
    border-color: #66afe9;
    outline: 0;
    -webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 8px rgba(102, 175, 233, .6);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, .075), 0 0 8px rgba(102, 175, 233, .6)
}