效果图
htm结构
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
<div class="box4"></div>
<div class="box5"></div>
<div class="box6"></div>
css样式
div{
width: 200px;
height: 50px;
background-color: #15b9d4;
margin: 20px auto;
box-sizing: border-box;
}
.box1{
border-left: 5px solid #000;
}
.box2{
box-shadow: inset 5px 0 0 0 #000;
}
.box3{
box-shadow: -5px 0 0 0 #000;
}
.box4{
background-image: linear-gradient(90deg,#000000 5px, transparent 5px);
}
.box5{
filter: drop-shadow(-5px 0 0 #000);
}
.box6{
position: relative;
}
.box6:after{
content: '';
width: 5px;
height: 50px;
position: absolute;
left: 0;
top: 0;
background-color: #000;
}
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感谢阅读，如有错误欢迎指正。
