前言：

本文内容：背景图应用及渐变、盒子模型及边框使用

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背景图片应用及渐变

背景图片

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<style>
    div{
        width: 700px;
        height: 500px;
        border: 1px solid black;
        /*图片默认是平铺的*/
        background-image: url("image/images.png");

    }
    .div1{
        /*水平平铺*/
        background-repeat: repeat-x;
    }
    .div2,.div3{
        /*水平平铺*/
        background-repeat: no-repeat;
    }

</style>

列表样式美化

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#nav{
    width: 300px;
}
h1{
    color: red;
    /*颜色 图片 图片位置 平铺方式*/
    background: url("../image/down.jpg") 230px 15px no-repeat;
}
/*ul li*/
/*
list-style
    none 无
    circle 空心圆
    decimal 数字
    square 正方形
    armenian 默认 实心圆
*/
ul li{
    height: 30px;
    list-style: none;
    background: url("../image/up.jpg");
    background-repeat: no-repeat;
    background-position: 230px,2px;

}
a{
    text-decoration: none;
    font-size: 14px;
    color: black;
}

a:hover{
    background: #b8b5b5;
    color: #e71111;
}

颜色渐变

Grabient

GitHub - johnkorzhuk/grabient: UI to generate linear-gradients

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<style>
    body{
        background-color: #8EC5FC;
        background-image: -webkit-linear-gradient(62deg, #8EC5FC 0%, #E0C3FC 100%);
        background-image: -moz-linear-gradient(62deg, #8EC5FC 0%, #E0C3FC 100%);
        background-image: -o-linear-gradient(62deg, #8EC5FC 0%, #E0C3FC 100%);
        background-image: linear-gradient(62deg, #8EC5FC 0%, #E0C3FC 100%);
    }
</style>

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盒子模型及边框使用

什么是盒子模型

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margin：外边距

padding：内边距

border：边框

边框

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        /*去除默认边距及超链接下划线*/
        *{
            margin: 0;
            padding: 0;
            text-decoration: none;
        }
        /*border: 粗细 样式 颜色*/
        #box{
            width: 300px;
            border: 1px solid red;
        }
        h2,form{
            background-color: #D9AFD9;
            background-image: -webkit-linear-gradient(344deg, #D9AFD9 0%, #97D9E1 100%);
            background-image: -moz-linear-gradient(344deg, #D9AFD9 0%, #97D9E1 100%);
            background-image: -o-linear-gradient(344deg, #D9AFD9 0%, #97D9E1 100%);
            background-image: linear-gradient(344deg, #D9AFD9 0%, #97D9E1 100%);
        }
        /*solid 实线*/
        div:nth-of-type(1) input{
            border: 2px solid black;
        }
        /*dashen 虚线*/
        div:nth-of-type(2) input{
            border: 2px dashed black;
        }
    </style>
</head>
<body>
<div id="box">
    <h2>会员登录</h2>
    <form action="#">
        <div>
            <span>账号：</span>
            <input type="text">
        </div>
        <div>
            <span>密码：</span>
            <input type="password">
        </div>
        <div>
            <span>邮箱：</span>
            <input type="email">
        </div>
        <div>
            <input type="submit" value="登录"/>
            <input type="reset" value="取消"/>
        </div>
    </form>
</div>
</body>
</html>

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