给出以下HTML和CSS代码:
input[type=text] {
background-color: red;
}
input[type=text]:focus {
background-color: white;
}
button[type=submit] {
background-color: blue;
}
button[type=submit]:focus {
background-color: green;
}
<form method="get" id="searchform" action="index.php">
<input type="text" placeholder="Search..." name="s" id="s" value="" autocomplete="off">
<button class="search-button" type="submit">
<span class="icon-search2"></span>
</button>
</form>
当我专注于输入[type = text]时,如何激活“ button [type = submit]:focus”? 我正在尝试做类似的事情:
input[type=text]:focus {
background-color: white;
}
button[type=submit]:focus {
background-color: green;
}
但这不起作用...知道吗?预先感谢!
答案 0 :(得分:2)
没有预处理器就无法嵌套这样的CSS。
要输入的焦点是选择下一个按钮元素。您可以使用~ selector:
input[type=text] {
background-color: red;
}
input[type=text]:focus {
background-color: white;
}
button[type=submit] {
background-color: blue;
}
button[type=submit]:focus,
input[type=text]:focus~button[type=submit] {
background-color: green;
}
<form method="get" id="searchform" action="index.php">
<input type="text" placeholder="Search..." name="s" id="s" value="" autocomplete="off">
<button class="search-button" type="submit">
<span class="icon-search2">Click me</span>
</button>
</form>
答案 1 :(得分:0)
很简单:您不能。您一次只能专注于一个元素。