1.fieldset

<fieldset>
        <legend>
            添加書
        </legend>
        <div class="form-group">
            <label>Name:</label>
            <input type="text" v-model="newProduct.name" placeholder="name"> <br>
        </div>
        <div class="form-group">
            <label>price:</label>
            <input type="number" v-model.number="newProduct.price" placeholder="price"> <br>
        </div>
 

2.demo.css

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box
}
/*字體*/
html {
    font-size: 12px;
    font-family: Ubuntu, simHei, sans-serif;
    font-weight: 400
}

body {
    font-size: 1rem
}
/*表格*/
table,
td,
th {
    border-collapse: collapse;
    border-spacing: 0
}

table {
    width: 100%
}

td,
th {
    border: 1px solid #bcbcbc;
    padding: 5px 10px
}

th {
    background: #42b983;
    font-size: 1.2rem;
    font-weight: 400;
    color: #fff;
    cursor: pointer
}

tr:nth-of-type(odd) {
    background: #fff
}

tr:nth-of-type(even) {
    background: #eee
}

fieldset {
    border: 1px solid #BCBCBC;
    padding: 15px;
}
/*輸入框*/
input {
    outline: none
}

input[type=text] {
    border: 1px solid #ccc;
    padding: .5rem .3rem;
}

input[type=text]:focus {
    border-color: #42b983;
}

/*按鈕*/
button {
    outline: none;
    padding: 5px 8px;
    color: #fff;
    border: 1px solid #BCBCBC;
    border-radius: 3px;
    background-color: #009A61;
    cursor: pointer;
}

button:hover {
    opacity: 0.8;
}

#app {
    margin: 0 auto;
    max-width: 640px
}

/*表單*/
.form-group {
    margin: 10px;
}

.form-group > label {
    display: inline-block;
    width: 10rem;
    text-align: right;
}

.form-group > input,
.form-group > select {
    display: inline-block;
    height: 2.5rem;
    line-height: 2.5rem;
}

/*文本居中*/
.text-center {
    text-align: center;
}
/*分頁*/
.pagination {
    display: inline-block;
    padding-left: 0;
    margin: 21px 0;
    border-radius: 3px;
}

.pagination > li {
    display: inline;
}

.pagination > li > a {
    position: relative;
    float: left;
    padding: 6px 12px;
    line-height: 1.5;
    text-decoration: none;
    color: #009a61;
    background-color: #fff;
    border: 1px solid #ddd;
    margin-left: -1px;
    list-style: none;
}

.pagination > li > a:hover {
    background-color: #eee;
}

.pagination .active {
    color: #fff;
    background-color: #009a61;
    border-left: none;
    border-right: none;
}

.pagination .active:hover {
    background: #009a61;
    cursor: default;
}

.pagination > li:first-child > a .p {
    border-bottom-left-radius: 3px;
    border-top-left-radius: 3px;
}

.pagination > li:last-child > a {
    border-bottom-right-radius: 3px;
    border-top-right-radius: 3px;
}
 

[vue]前端通用css