【问题标题】：Can't position button element无法定位按钮元素
【发布时间】：2022-02-12 18:34:40
【问题描述】：
我使用引导程序创建了一个提交按钮，但我想将其放置在箭头指向的位置，但无论我写什么，位置都不会改变，就像按钮粘在位置上，我无法重新定位它
我怎样才能把它放在那里？
.container {
position: absolute;
top: 30%;
left: 30%;
transform: translate(-50%, -50%);
text-align: center;
/*give the text bolder font*/
font-weight: bold;
}
/*set the input under the span element*/
input[type=text] {
text-align: center;
font-weight: bold;
font-size: 20px;
border: 2px solid #ccc;
border-radius: 4px;
padding: 12px 10px;
width: 100%;
box-sizing: border-box;
margin-top: 6px;
margin-bottom: 16px;
/*set the space from left to 30%*/
margin-left: 30%;
}
/* set the button under the input element*/
button {
background-color: #4CAF50;
color: white;
padding: 12px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
/*set the space from left to 30%*/
margin-left: 30%;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>quiz</title>
<link rel="stylesheet" href="quiz2.css">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
</head>
<body>
<div class="container">
<span id="question">What type of file do you need to open javascript file ?</span>
<div class="input-group flex-nowrap">
<input type="text" id="answer" class="form-control" placeholder="Answer Here..." aria-label="Username" aria-describedby="addon-wrapping">
</div>
<button type="button" id="submit" class="btn btn-outline-success">Submit</button>
</div>
【问题讨论】：
标签：
html
css
flexbox
css-position
【解决方案1】：
如果您能够更改 HTML，这里有一个方法：
将您的按钮包裹在另一个div中：
<div class="button-wrapper">
<button type="button" id="submit" class="btn btn-outline-success">Submit</button>
</div>
然后在该包装上设置margin-left：
.button-wrapper {
/*set the space from left to 30%*/
margin-left: 30%;
}
检查这个 sn-p 的结果。
.container {
position: absolute;
top: 30%;
left: 30%;
transform: translate(-50%, -50%);
/*give the text bolder font*/
font-weight: bold;
}
/*set the input under the span element*/
input[type=text] {
text-align: center;
font-weight: bold;
font-size: 20px;
border: 2px solid #ccc;
border-radius: 4px;
padding: 12px 10px;
width: 100%;
box-sizing: border-box;
margin-top: 6px;
margin-bottom: 16px;
/*set the space from left to 30%*/
margin-left: 30%;
}
/* set the button under the input element*/
button {
background-color: #4CAF50;
color: white;
padding: 12px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
}
.button-wrapper {
/*set the space from left to 30%*/
margin-left: 30%;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>quiz</title>
<link rel="stylesheet" href="quiz2.css">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
</head>
<body>
<div class="container">
<span id="question"></span>
<div class="input-group flex-nowrap">
<input type="text" id="answer" class="form-control" placeholder="Answer Here..." aria-label="Username" aria-describedby="addon-wrapping">
</div>
<div class="button-wrapper">
<button type="button" id="submit" class="btn btn-outline-success">Submit</button>
</div>
</div>
【解决方案2】：
我只是定义了一个 button-container 类并使用 flex & justify：
.container {
position: absolute;
top: 30%;
left: 30%;
transform: translate(-50%, -50%);
text-align: center;
/*give the text bolder font*/
font-weight: bold;
}
/*set the input under the span element*/
input[type=text] {
text-align: center;
font-weight: bold;
font-size: 20px;
border: 2px solid #ccc;
border-radius: 4px;
padding: 12px 10px;
width: 100%;
box-sizing: border-box;
margin-top: 6px;
margin-bottom: 16px;
/*set the space from left to 30%*/
margin-left: 30%;
}
/* set the button under the input element*/
button {
background-color: #4CAF50;
color: white;
padding: 12px 20px;
border: none;
border-radius: 4px;
cursor: pointer;
/*set the space from left to 30%*/
margin-left: 30%;
}
.button-container {
display: flex;
justify-content: start;
margin-left: 30%;
}
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>quiz</title>
<link rel="stylesheet" href="quiz2.css">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
</head>
<body>
<div class="container">
<span id="question">What type of file do you need to open javascript file ?</span>
<div class="input-group flex-nowrap">
<input type="text" id="answer" class="form-control" placeholder="Answer Here..." aria-label="Username" aria-describedby="addon-wrapping">
</div>
<div class="button-container">
<button type="button" id="submit" class="btn btn-outline-success">Submit</button>
</div>
</div>