【发布时间】：2020-06-24 17:19:59
【问题描述】：
我正在尝试将一个按钮的外观与另一个按钮的响应性结合起来：
按钮 A：https://codepen.io/vitor-siqueira/pen/xNBExN
按钮 B：https://codepen.io/AnthonyBmm/pen/poooJmO
我想制作按钮 C，它的外观和感觉与按钮 A 完全相同，但它会自动调整大小以适应按钮文本（没有换行，如按钮 B）。目前，我创建了 3-4 个几乎相同的按钮 A，并调整了 SVG 和 CSS 的宽度值，这是一种糟糕的做法。
我发现按钮 B 具有类似的动画但没有 SVG，并认为尝试复制按钮 A 效果可能是一个好的开始，但我未能成功。
有人可以帮忙吗？
2 支笔的附加代码如下：
按钮 A HTML：
<div class="container">
<div class="center">
<button class="btn">
<svg width="180px" height="60px" viewBox="0 0 180 60" class="border">
<polyline points="179,1 179,59 1,59 1,1 179,1" class="bg-line" />
<polyline points="179,1 179,59 1,59 1,1 179,1" class="hl-line" />
</svg>
<span>HOVER ME</span>
</button>
</div>
</div>
按钮 A CSS：
@import url('https://fonts.googleapis.com/css?family=Lato:100&display=swap');
body, html {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
background: #5CA4EA;
overflow: hidden;
font-family: 'Lato', sans-serif;
}
.container {
width: 400px;
height: 400px;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
display: flex;
justify-content: center;
align-items: center;
}
.center {
width: 180px;
height: 60px;
position: absolute;
}
.btn {
width: 180px;
height: 60px;
cursor: pointer;
background: transparent;
border: 1px solid #91C9FF;
outline: none;
transition: 1s ease-in-out;
}
svg {
position: absolute;
left: 0;
top: 0;
fill: none;
stroke: #fff;
stroke-dasharray: 150 480;
stroke-dashoffset: 150;
transition: 1s ease-in-out;
}
.btn:hover {
transition: 1s ease-in-out;
background: #4F95DA;
}
.btn:hover svg {
stroke-dashoffset: -480;
}
.btn span {
color: white;
font-size: 18px;
font-weight: 100;
}
按钮 B HTML：
<body>
<a href="#">push this and that
<span></span>
<span></span>
<span></span>
<span></span>
</a>
</body>
按钮 B CSS：
* {
box-sizing: border-box;
}
body {
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background: #999;
}
a {
/*border-radius: 12px;*/
border: 3px outset #888;
position: relative;
display: inline-block;
padding: 15px 30px;
color: #eee;
text-transform: uppercase;
letter-spacing: 4px;
overflow: hidden;
box-shadow: 0 0 10px rgb(0, 0, 0, 1);
font-family: verdana;
font-size: 28px;
font-weight: bolder;
text-decoration: none;
background:linear-gradient(160deg, #666, #444);
text-shadow: 0px 0px 2px rgba(0, 0, 0, .5);
transition: 0.2s;
}
a:active {
border: 3px outset #ddd;
color: #fff;
background: linear-gradient(160deg, #666, #444);
text-shadow: 0px 0px 4px #ccc;
box-shadow: 0 0 10px #fff, 0 0 40px #fff, 0 0 80px #fff;
transition-delay: 1s;
}
a span {
position: absolute;
display: block;
}
a span:nth-child(1) {
top: 0;
left: -100%;
width: 100%;
height: 2px;
background: linear-gradient(90deg, transparent, #eee);
}
a:active span:nth-child(1) {
left: 100%;
transition: 1s;
}
a span:nth-child(2) {
top: -100%;
right: 0;
width: 2px;
height: 100%;
background: linear-gradient(180deg, transparent, #eee);
}
a:active span:nth-child(2) {
top: 100%;
transition: 1s;
transition-delay: 0.25s;
}
a span:nth-child(3) {
bottom: 0;
right: -100%;
width: 100%;
height: 2px;
background: linear-gradient(270deg, transparent, #eee);
}
a:active span:nth-child(3) {
right: 100%;
transition: 1s;
transition-delay: 0.5s;
}
a span:nth-child(4) {
bottom: -100%;
left: 0;
width: 2px;
height: 100%;
background: linear-gradient(360deg, transparent, #eee);
}
a:active span:nth-child(4) {
bottom: 100%;
transition: 1s;
transition-delay: 0.75s;
}
【问题讨论】：