index.css

input:focus, button:focus {
    outline: none !important;
    box-shadow: none !important;
}

input {
    border-radius: 0;
}

body {
    font-family: 黑体;
}

.container-fluid {
    margin-top: 20px;
}

.input-group {
    width: 600px;
}

.display-none {
    display: none;
}

.highlight{
    color: red;
}

.item{
    display: block;
    margin: 20px;
}

.item-url{
    font-size: 22px;
    text-decoration: underline;
}

.item-content{
    font-size: 16px;
}