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我希望顯示器與第二個計算器中按鈕之間的距離爲100px，但我不知道該怎麼做。html增加div中的頂部邊距
這是我的HTML代碼：
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" type="text/css" href="design2.css" >
<title>Calculator Italy</title>
</head>
<body bgcolor="skyblue">
<form>
<div id="italyCalc">
<input type="text" id="display" disabled><br>
<input type="button" id="item1" onclick="adding('1')" value="1" >
<input type="button" id="item1" onclick="adding('2')" value="2" >
<input type="button" id="item1" onclick="adding('3')" value="3" >
<input type="button" id="item1" onclick="adding('+')" value="+" ><br>
<input type="button" id="item2" onclick="adding('4')" value="4" >
<input type="button" id="item2" onclick="adding('5')" value="5" >
<input type="button" id="item2" onclick="adding('6')" value="6" >
<input type="button" id="item2" onclick="deleteLast()" value="<--" ><br>
<input type="button" id="item1" onclick="adding('7')" value="7" >
<input type="button" id="item1" onclick="adding('8')" value="8" >
<input type="button" id="item1" onclick="adding('9')" value="9" >
<input type="button" id="item1" onclick="adding('.')" value="." ><br>
<input type="button" id="item2" onclick="adding('0')" value="0" >
<input type="button" id="item2" onclick="adding('-')" value="-" >
<input type="button" id="item2" onclick="adding('*')" value="*" >
<input type="button" id="item2" onclick="adding('/')" value="/" ><br>
<input type="button" id="itemBig" onclick="adding('C')" value="C" >
<input type="button" id="item1" onclick="power('2')" value="X^2" >
<input type="button" id="itemBig" onclick="returnResult()" value="=" >
</div>
<div id="italyCalc2">
<input type="text" id="display2" disabled><br>
<input type="button" id="item" onclick="adding2('1')" value="1" >
<input type="button" id="item" onclick="adding2('2')" value="2" >
<input type="button" id="item" onclick="adding2('3')" value="3" >
<input type="button" id="item" onclick="adding2('+')" value="+" >
<input type="button" id="item" onclick="power3('3')" value="X^3" ><br>
<input type="button" id="item" onclick="adding2('4')" value="4" >
<input type="button" id="item" onclick="adding2('5')" value="5" >
<input type="button" id="item" onclick="adding2('6')" value="6" >
<input type="button" id="item" onclick="deleteLast2()" value="<--" >
<input type="button" id="item" onclick="sin2()" value="sin" ><br>
<input type="button" id="item" onclick="adding2('7')" value="7" >
<input type="button" id="item" onclick="adding2('8')" value="8" >
<input type="button" id="item" onclick="adding2('9')" value="9" >
<input type="button" id="item" onclick="adding2('.')" value="." >
<input type="button" id="item" onclick="cos2()" value="cos" ><br>
<input type="button" id="item" onclick="adding2('0')" value="0" >
<input type="button" id="item" onclick="adding2('-')" value="-" >
<input type="button" id="item" onclick="adding2('*')" value="*" >
<input type="button" id="item" onclick="adding2('/')" value="/" >
<input type="button" id="item" onclick="root2('2')" value="sqrt" ><br>
<input type="button" id="itemBig" onclick="adding2('C')" value="C" >
<input type="button" id="itemBig" onclick="returnResult2()" value="=" >
</div>
</form>
<script src="logic2.js"></script>
</body>
</html>
這是我的CSS代碼部分：
#italyCalc2
{
height: 500px;
width: 300px;
border: 3px solid green;
box-shadow: 0px 0px 100px green;
background-image: url("https://tse3.mm.bing.net/th?id=OIP.M4cfd6650aaff3feadc8bed590687b6b7H0&pid=15.1&P=0&w=274&h=172");
margin: 100px;
text-align: center;
float:left;
}
#display2
{
margin-top: 20px;
margin-bottom: 20px;
border: 1px solid red;
box-shadow: 0px 0px 30px red;
width: 260px;
height: 60px;
text-align: right;
font: 20px bold;
color: red;
}
#item
{
width: 41px;
height: 41px;
margin-left: 4px;
margin-bottom: 31px;
box-shadow: 0px 0px 20px white;
cursor: pointer;
color: white;
background-color: red;
border: 1px solid white;
font-weight: bold;
}
換句話說，我想看到下面的按鈕顯示和100像素，而無需修改距離從一個按鈕到另一個按鈕。
我該怎麼做？
只是一張紙條：ID應該只在文檔中使用* once *（您有很多「item」，「item1」和「item2」ID）。如果您想將相同的樣式應用於t下襬，使用類，但不是ID。 – Johannes