摘要：
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
.flexCenter {
display: flex;
justify-content: center;
align-items: center;
}
html,
body {
height: 100%;
.flexCenter();
}
:root {
--borderColor: red;
}
.content {}
.logo {
border-radius: 10px;
box-shadow: 0 0 1.5vw #2F4F4F inset;
cursor: pointer;
text-align: center;
width: 500px;
height: 100px;
line-height: 100px;
padding: 0px 20px;
background: linear-gradient(to left, var(--borderColor), var(--borderColor)) left top no-repeat,
linear-gradient(to bottom, var(--borderColor), var(--borderColor)) left top no-repeat,
linear-gradient(to left, var(--borderColor), var(--borderColor)) right top no-repeat,
linear-gradient(to bottom, var(--borderColor), var(--borderColor)) right top no-repeat,
linear-gradient(to left, var(--borderColor), var(--borderColor)) left bottom no-repeat,
linear-gradient(to bottom, var(--borderColor), var(--borderColor)) left bottom no-repeat,
linear-gradient(to left, var(--borderColor), var(--borderColor)) right bottom no-repeat,
linear-gradient(to left, var(--borderColor), var(--borderColor)) right bottom no-repeat;
background-size: 2px 10px, 10px 2px, 2px 10px, 10px 2px;
transition: all .4s ease;
border: 1px solid transparent;
color: white;
font-size: 30pt;
letter-spacing: 0.1em;
}
.logo:hover {
/* border: 1px solid var(--borderColor) */
}
</style>
<body>
<div class="content">
<div class="logo"></div>
</div>
</body>