HTML5如何實現Select下拉框右邊加圖標

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1.那么我們先來看一下效果吧！ 
 

2.再看看h6的結構：

<div id="login-div">
                <div class="select-wrapper">
                    <select id="selector1">
                        <option value="" disabled selected>請選擇系統：</option>
                        <option value="1">微信-蘋果</option>
                        <option value="2">微信-安卓</option>
                    </select>
                    <img src="ossweb-img/arrow.png" alt="" class="arrow" />
                </div>
                <div class="select-wrapper">
                    <select id="selector2">
                        <option value="" disabled selected>請選擇渠道：</option>
                        <option value="1">渠道1</option>
                        <option value="2">渠道2</option>
                    </select>
                    <img src="ossweb-img/arrow.png" alt="" class="arrow" />
                </div>
                <div class="select-wrapper">
                    <select id="selector3">
                        <option value="" disabled selected>請選擇大區：</option>
                        <option value="1">大區1</option>
                        <option value="2">大區2</option>
                    </select>
                    <img src="ossweb-img/arrow.png" alt="" class="arrow" />
                </div>
                <div class="select-wrapper">
                    <select id="selector4">
                        <option value="" disabled selected>請選擇角色：</option>
                        <option value="1">角色1</option>
                        <option value="2">角色2</option>
                    </select>
                    <img src="ossweb-img/arrow.png" alt="" class="arrow" />
                </div>
                <p id="notice">單個帳號只能領取一次獎勵</p>
                <img src="ossweb-img/comfire1.png" alt="" id="comfire1"/>
            </div>

3.樣式部分是用了sass進行控制的，如果不會sass也可以換成css。沒有什么特別的運算需要轉化，所以換成css也簡單

@function REM($n){
        @return $n/$REM*1rem;
    }
 #login-div{
        background: url(../ossweb-img/kuang1.png)0 0 no-repeat;
        background-size: 100% 100%;
        width: REM(564);
        height: REM(531);
        margin-left: REM(38);
        .select-wrapper{
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
            height: REM(50);
            margin: REM(10) auto;
            padding-top: REM(15);
            &>select{
                width: REM(458);
                height: REM(63);
                padding-left: REM(20);
                border: 1px solid #23282d;
                background: #23282d;
                -webkit-appearance: none;
                color: #92989f;
                font-size: REM(24);
                margin-top: REM(75);
                border-radius: 0;
                z-index:10;
            }
            .arrow{
                position: absolute;
                width: REM(41);
                height: REM(30);
                top: REM(65);
                right: REM(80);
                pointer-events: none;
                z-index:11;
            }
        }
        #notice{
                font-size: REM(20);
                color: #92989f;
                text-align: center;
                margin-top: REM(75);
        }
        #comfire1{
                width: REM(220);
                height: REM(78);
                margin-top: REM(20);
                margin-left: REM(174);
        }
    }

4.解析：主要是.arrow這個元素進行右邊那個圖標的位置控制。利用position: absolute;這個屬性控制好位置，就基本沒有問題了。

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