纯CSS实现饼图、环形图（百分⽐）⼀、饼图
.pie {
width: 100px;
height: 100px;
border-radius: 50%;
background: yellowgreen;
background-image: linear-gradient(to right, transparent 50%, #655 0);
}
.
pie::before {
content: '';
display: block;
margin-left: 50%;
height: 100%;
border-radius: 0 100% 100% 0/50%;
background-color: inherit;
transform-origin: left;
transform: rotate(.2turn);
}
<div class="pie"></div>
⼆、环形图
.loading {
margin: 100px auto;
width: 8em;
height: 8em;
position: relative;
}
.loading .progress {
position: absolute;
width: 6em;
height: 6em;
background-color: white;
border-radius: 50%;
left: 1em;
top: 1em;
line-height: 6em;
text-align: center;
}
.
left,
.right {
width: 4em;
height: 8em;
overflow: hidden;
position: relative;
float: left;
background-color: #999999
}
.left {
border-radius: 8em 0 0 8em;
}absolute relative
.right {
border-radius: 0 8em 8em 0;
}
.left:after,
.right:after {
content: "";
position: absolute;
display: block;
width: 4em;
height: 8em;
background-color: white;
border-radius: 8em 0 0 8em;
background-color: red;
}
.right:after {
content: "";
position: absolute;
display: block;
border-radius: 0 8em 8em 0;
}
.left:after {
transform-origin: right center;
}
.right:after {
transform-origin: left center;
transform: rotateZ(45deg);
}
<div class="loading">
<div class="left"></div>
<div class="right"></div>
<div class="progress">85%</div> </div>

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