问题
I'm trying to get the trapezoid shape resize when I resize browser's window. I was trying to do that by using box-resize but it still didn't work. Is it possible to do that with trapezoid defined/created by using border hack? What other way can I make trapezoid with the ability to resize when browser window is resized?
<body style="position:relative;height:500px;">
<div id="personal" style="position:relative;
background-color: red;
width:100%;
height:100%;">
<div id="floor" style="position:absolute; margin-top:10px;
border-bottom: 300px solid black;
border-left: 565px solid transparent;
border-right: 570px solid transparent;
height: 10%;
width: 100%;">
</div>
</div>
</body>
回答1:
You can't apply percentage units to border but you can achieve your aim with vw units :
1/100th of the width of the v+iewport. (source : MDN)
DEMO
body {
position:relative;
height:500px;
margin:0;
padding:0;
}
#personal {
position:relative;
background-color: red;
width:100%;
height:100%;
}
#floor {
position:absolute;
top:10px;
border-bottom: 300px solid black;
border-left: 19vw solid transparent;
border-right: 19vw solid transparent;
height: 10%;
width: 60vw;
}<body>
<div id="personal">
<div id="floor"></div>
</div>
</body>note : I also moved your inline CSS to a seperate stylesheet as inline CSS isn't recomended.
vw units are supported by IE9+ see canIuse
来源：https://stackoverflow.com/questions/26627834/how-to-resize-trapezoid-in-css-when-browser-window-resize