javascript - 如何使用户名框突出显示？

Question

你好我有问题... 我想更改登录表单中的用户名和密码文本框突出显示颜色... 当我点击它时，它被选为正方形 但它不是方形而是圆形 这是我的代码，显示了我的问题....

html:

<div  id="username">
    <form>
        <p><span>UserName:</span>
            <input name="UserName" type="text" size="0" id="box1" >
        </p>
    </form>
</div>


<div class="login_form" id="pass">
    <form>
        <p>
            <span>Password:</span>
            <input  name="lastname" type="password" id="box2">
        </p>
    </form>
</div>

CSS:

    #pass {
    position: absolute;
    top: 22px;
    left: 963px;
    right: 10%;
    width: 280px;
    height: 62px;
    border-radius: 20px;
    font-family: corbel;
}

#username {
    position:absolute;
    top: 23px;
    left: 709px;
    right: 10%;
    width: 280px;
    height: 61px;
    font-family: corbel;
    border:medium;
    border-color:black;
}


#button {
    position: absolute;
    left: 1170px;
    top: 40px;
    background-color: #FFFFFF;
    font-family:corbel;
}

#loginform {
    position:absolute;
    left:100px
}

#bar{
    position:absolute;
    top:0;
    left:0;
    background-color:black;
}

#login{
    position: absolute;
    top: 42px;
    left: 1202px;
    width: 63px;
    height: 19px;
    background-color: #2799b6;
    text-align: center;
    font-family: corbel;
    border-radius:20px;
    color:#FFF;
    font-size:15px;
    opacity:1;
    -moz-transition:    opacity .5s;
    -o-transition:      opacity .5s;
    -webkit-transition: opacity .5s;
    transition:         opacity .5s;
}

#link {
    text-decoration:none
}

#login:hover {
    opacity:0.7;
    -moz-transition:    opacity .5s;
    -o-transition:      opacity .5s;
    -webkit-transition: opacity .5s;
    transition:         opacity .5s;
}

#box1 {
    border: 2px solid #bfbfbf;
    border-radius:20px;
}

#box2 {
    border: 2px solid #bfbfbf;
    border-radius:20px;
}

Answer 1

我认为使用 CSS 的 focus 属性应该可行:

input:focus {
    border: 1px solid #006600;
}

编辑: DEMO [JSFIDDLE]

更新:要删除默认轮廓(黄色)，您可以将outline 属性设置为none:

input {
   outline:none;
}

这是 updated fiddle.