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    CSS3 按钮

    CSS 按钮

    本章节我们为大家介绍使用 CSS 来制作按钮。


    基本按钮样式

    代码

    <style>
    .btn {
        border: none;
        color: #FFFFFF;
        padding: 15px 32px;
        text-align: center;
        -webkit-transition-duration: 0.4s;
        transition-duration: 0.4s;
        margin: 16px 0 !important;
        text-decoration: none;
        font-size: 16px;
        background-color: rgb(48, 110, 50);
        border-top-color: initial;
        border-right-color: initial;
        border-bottom-color: initial;
        border-left-color: initial;
        color: rgb(255, 255, 255);
        text-decoration-color: initial;
    }
    </style>
    <button class="btn">CSS 按钮</button>
    <button style="margin-left:25px;">默认按钮</button>
    

    渲染效果如下:


    .button {
        background-color: #4CAF50; /* Green */
        border: none;
        color: white;
        padding: 15px 32px;
        text-align: center;
        text-decoration: none;
        display: inline-block;
        font-size: 16px;
    }
    

    按钮颜色

    Green Blue Red Gray Black

    我们可以使用 background-color 属性来设置按钮颜色:

    <style>
        .button1 {background-color: #4CAF50;} /* Green */
        .button2 {background-color: #008CBA;} /* Blue */
        .button3 {background-color: #f44336;} /* Red */ 
        .button4 {background-color: #e7e7e7; color: black;} /* Gray */ 
        .button5 {background-color: #555555;} /* Black */
    </style>
    
    <button type="button" class="btn button1">Green</button>
    <button type="button" class="btn button2">Blue</button>
    <button type="button" class="btn button3">Red</button>
    <button type="button" class="btn button4">Gray</button>
    <button type="button" class="btn button5">Black</button>
    
    <button type="button" class="btn button1">Green</button>
    <button type="button" class="btn button2">Blue</button>
    <button type="button" class="btn button3">Red</button>
    <button type="button" class="btn button4">Gray</button>
    <button type="button" class="btn button5">Black</button>
    

    按钮大小

    我们可以使用 font-size 属性来设置按钮大小:

    <style>
        .font1 {font-size: 10px;}
        .font2 {font-size: 12px;}
        .font3 {font-size: 16px;}
        .font4 {font-size: 20px;}
        .font5 {font-size: 24px;}
    </style>
    <div>
        <button type="button" class="btn button1 font1">10px</button>
        <button type="button" class="btn button2 font2">12px</button>
        <button type="button" class="btn button3 font3">16px</button>
        <button type="button" class="btn button4 font4">20px</button>
        <button type="button" class="btn button5 font5">24px</button>
    </div>
    

    圆角按钮

    我们可以使用 border-radius 属性来设置圆角按钮:

    <style>
        .round1 {border-radius: 2px;}
        .round2 {border-radius: 4px;}
        .round3 {border-radius: 8px;}
        .round4 {border-radius: 12px;}
        .round5 {border-radius: 50%;}
    </style>
    <div>
        <button type="button" class="btn button1 round1">2px</button>
        <button type="button" class="btn button2 round2">4px</button>
        <button type="button" class="btn button3 round3">8px</button>
        <button type="button" class="btn button4 round4">12px</button>
        <button type="button" class="btn button5 round5">50%</button>
    </div>
    

    渲染效果如下


    按钮边框颜色

    我们可以使用 border 属性设置按钮边框颜色:

    .button1 {
        background-color: white;
        color: black;
        border: 2px solid #4CAF50; /* Green */
    }
    

    演示效果

    代码如下

    <style>
    .border1 {border-radius:3px;background-color:white;color:black;border:2px solid #4CAF50;}
    .border2 {border-radius:3px;background-color:white;color:black;border:2px solid #008CBA;}
    .border3 {border-radius:3px;background-color:white;color:black;border:2px solid #f44336;}
    .border4 {border-radius:3px;background-color:white;color:black;border:2px solid #e7e7e7;}
    .border5 {border-radius:3px;background-color:white;color:black;border:2px solid #555555;}
    </style>
    <div>
        <button type="button" class="btn border1">绿</button>
        <button type="button" class="btn border2">蓝</button>
        <button type="button" class="btn border3">红</button>
        <button type="button" class="btn border4">灰</button>
        <button type="button" class="btn border5">黑</button>
    </div>
    

    鼠标悬停按钮


    代码如下

    <style>
    .border11:hover {background-color:#4CAF50;color:white;}
    .border22:hover {background-color:#008CBA;color:white;}
    .border33:hover {background-color:#f44336;color:white;}
    .border44:hover {background-color:#e7e7e7;}
    .border55:hover {background-color:#555555;color:white;}
    
    .border111{border-radius:3px;background-color:#4CAF50;color:white;}
    .border222{border-radius:3px;background-color:#008CBA;color:white;}
    .border333 {border-radius:3px;background-color:#f44336;color:white;}
    .border444 {border-radius:3px;background-color:#e7e7e7;}
    .border555 {border-radius:3px;background-color:#555555;color:white;}
    
    .border111:hover {background-color:white;color:black;border:2px solid #4CAF50;}
    .border222:hover {background-color:white;color:black;border:2px solid #008CBA;}
    .border333:hover {background-color:white;color:black;border:2px solid #f44336;}
    .border444:hover {background-color:white;color:black;border:2px solid #e7e7e7;}
    .border555:hover {background-color:white;color:black;border:2px solid #555555;}
    
    </style>
    <div>
        <button type="button" class="btn border1 border111">绿</button>
        <button type="button" class="btn border2 border222">蓝</button>
        <button type="button" class="btn border3 border333">红</button>
        <button type="button" class="btn border4 border444">灰</button>
        <button type="button" class="btn border5 border555">黑</button>
    </div>
    <div>
        <button type="button" class="btn border1 border11">绿</button>
        <button type="button" class="btn border2 border22">蓝</button>
        <button type="button" class="btn border3 border33">红</button>
        <button type="button" class="btn border4 border44">灰</button>
        <button type="button" class="btn border5 border55">黑</button>
    </div>
    

    我们可以使用 :hover 选择器来修改鼠标悬停在按钮上的样式。

    提示: 我们可以使用 transition-duration 属性来设置 “hover” 效果的速度:

    .button {
        -webkit-transition-duration: 0.4s; /* Safari */
        transition-duration: 0.4s;
    }
    
    .button:hover {
        background-color: #4CAF50; /* Green */
        color: white;
    }
    

    按钮阴影

    我们可以使用 box-shadow 属性来为按钮添加阴影:

    .button1 {
        box-shadow: 0 8px 16px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
    }
    
    .button2:hover {
        box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24), 0 17px 50px 0 rgba(0,0,0,0.19);
    }
    

    禁用按钮

    代码如下

    <style>
        .disabled{cursor: not-allowed;opacity: 0.6;}
    </style>
    <div>
        <button type="button" class="btn">正常按钮</button>
        <button type="button" class="btn disabled">禁用按钮</button>
    </div>
    

    我们可以使用 opacity 属性为按钮添加透明度 (看起来类似 “disabled” 属性效果)。

    提示: 我们可以添加 cursor 属性并设置为 “not-allowed” 来设置一个禁用的图片:

    .disabled {
        opacity: 0.6;
        cursor: not-allowed;
    }
    

    按钮宽度



    代码如下

    <style>
        .width1 {width: 250px}
        .width2 {width: 50%}
        .width3 {width: 100%}
    </style>
    <div>
        <button type="button" class="btn button1 width1">250px</button>
        <br>
        <button type="button" class="btn button2 width2">50%</button>
        <br>
        <button type="button" class="btn button3 width3">100%</button>
    </div>
    

    默认情况下,按钮的大小有按钮上的文本内容决定( 根据文本内容匹配长度 )。 我们可以使用 width 属性来设置按钮的宽度:

    提示: 如果要设置固定宽度可以使用像素 (px) 为单位,如果要设置响应式的按钮可以设置为百分比。

    .button1 {width: 250px;}
    .button2 {width: 50%;}
    .button3 {width: 100%;}
    

    按钮组



    效果如下

    <style>
        .float {
            margin: 0 !important;
            float: left;
            transition: none;
        }
    
        .float:hover {
            background-color: #3e8e41;
        }
    </style>
    <div>
        <button type="button" class="btn button1 float">Button</button>
        <button type="button" class="btn button2 float">Button</button>
        <button type="button" class="btn button3 float">Button</button>
        <button type="button" class="btn button4 float">Button</button>
    </div>
    

    移除外边距并添加 float:left 来设置按钮组:

    .button {
        float: left;
    }
    

    带边框按钮组


    代码如下

    <button 
        type="button" 
        class="btn btn1 float" 
        style="
        border: 1px solid green; 
        --darkreader-inline-border-top:#00e500; 
        --darkreader-inline-border-right:#00e500; 
        --darkreader-inline-border-bottom:#00e500; 
        --darkreader-inline-border-left:#00e500;" 
        data-darkreader-inline-border-top="" 
        data-darkreader-inline-border-right="" 
        data-darkreader-inline-border-bottom="" 
        data-darkreader-inline-border-left=""
    >
        Button
    </button>
    

    我们可以使用 border 属性来设置带边框的按钮组:

    .button {
        float: left;
        border: 1px solid green
    }
    

    按钮动画

    鼠标移动到按钮上后添加箭头标记:

    代码如下

    <style>
        .button {
            display: inline-block;
            border-radius: 4px;
            background-color: #f4511e;
            border: none;
            color: #FFFFFF;
            text-align: center;
            font-size: 28px;
            padding: 20px;
            width: 180px;
            transition: all 0.5s;
            cursor: pointer;
            margin: 5px;
            vertical-align:middle;
        }
        .button span {
            cursor: pointer;
            display: inline-block;
            position: relative;
            transition: 0.5s;
        }
    
        .button span :after {
            content: '»';
            position: absolute;
            opacity: 0;
            top: 0;
            right: -20px;
            transition: 0.5s;
        }
    
        .button:hover span {
            padding-right: 25px;
        }
    
        .button:hover span :after {
            opacity: 1;
            right: 0;
        }
    </style>
    <div >
        <button class="button">
            <span>Hover </span>
        </button>
    </div>
    
    

    点击时添加 “波纹” 效果:

    代码如下

    <style>
    .button123 {
        position: relative;
        background-color: #4CAF50;
        border: none;
        font-size: 28px;
        color: #FFFFFF;
        padding: 20px;
        width: 200px;
        text-align: center;
        -webkit-transition-duration: 0.4s; /* Safari */
        transition-duration: 0.4s;
        text-decoration: none;
        overflow: hidden;
        cursor: pointer;
    }
    
    .button123:after {
        content: "";
        background: #90EE90;
        display: block;
        position: absolute;
        padding-top: 300%;
        padding-left: 350%;
        margin-left: -20px!important;
        margin-top: -120%;
        opacity: 0;
        transition: all 0.8s
    }
    
    .button123:active:after {
        padding: 0;
        margin: 0;
        opacity: 1;
        transition: 0s
    }
    </style>
    <button class="button123">Click Me</button>
    

    点击时添加 “压下” 效果:

    代码如下

    <style>
        .button777 {
        display: inline-block;
        padding: 15px 25px;
        font-size: 24px;
        cursor: pointer;
        text-align: center;   
        text-decoration: none;
        outline: none;
        color: #fff;
        background-color: #4CAF50;
        border: none;
        border-radius: 15px;
        box-shadow: 0 9px #999;
        }
    
        .button777:hover {background-color: #3e8e41}
    
        .button777:active {
        background-color: #3e8e41;
        box-shadow: 0 5px #666;
        transform: translateY(4px);
        }
    </style>
    <div>
        <button class="button777">Click Me</button>
    </div>
    
    
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