Box shadow not working in microsoft edge

问题

Box-shadow not working on Microsoft Edge browser. I have implemented the follow in the section: (I'm not an idiot I have at the top)

<meta http-equiv="X-UA-Compatible" content="IE=edge">

This is the body of my index.html file:

<body>
    <div id="wrapper">
        <header>
            <div id="header-inner">
                <div id="logo">
                    <a href="index.html">body</a>
                </div>
            <ul>
                <li><a href="index.html">Home</a></li>
                <li><a id="sign-in" href="#">Sign in</a>
                    <span id="sign-in-menu">
                        <div class="arrow-up"></div>
                        <div class="arrow-up-top"></div>

                        <div class="form">
                            <form action="login.php" method="get">
                            <input type="text" placeholder="Username" name="inputUser">
                            <input type="password" placeholder="Password"
                            name="inputPass">
                            <!-- <input type="checkbox" name="checkbox" id="checkbox" class="css-checkbox">
                                <label for="checkboxG1" class="css-label">Remember me</label> COOOKKiiieeesss -->
                            </form>
                        </div>

                        <div class="submit-area">
                            <input type="submit" value="Sign up">
                        </div>
                    </span>
                </li>
                <li><a href="register.html">Sign up</a></li>
            </ul>
        </div>
    </header>
</div>

The hover CSS box shadow code:

header li > span input[type=submit]:hover {
    -webkit-box-shadow: 0 0 0 1px #383e46;
    -ms-box-shadow: 0 0 0 1px #383e46;
    box-shadow: 0 0 0 1px #383e46;
}

回答1:

You Can Check Out This: Box Shadow For Edge

You need an extra element, but it's do-able with filter.

For Ie 8 and above (Egde version) You can Check this :box-shadow property

回答2:

Either change the css to:

header li > a > span input[type=submit]:hover {
    -webkit-box-shadow: 0 0 0 1px #383e46;
    -ms-box-shadow: 0 0 0 1px #383e46;
    box-shadow: 0 0 0 1px #383e46;
}

header li span input[type=submit]:hover {
    -webkit-box-shadow: 0 0 0 1px #383e46;
    -ms-box-shadow: 0 0 0 1px #383e46;
    box-shadow: 0 0 0 1px #383e46;
}

You have put an > between the li and span however the span never appears directly after the li within the code structure. Instead you either need to specify the a tag in your css like in my first example or remove the > to remove the specificity like in my second example.

来源：https://stackoverflow.com/questions/39867235/box-shadow-not-working-in-microsoft-edge

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css3