css实现圆形里面感叹号

.circle-exclamation {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: inline-block;
    background-color: #eb4d4b;
}
.circle-exclamation::before {
    content: "!";
    font-size: 16px;
    color: #fff;
    line-height: 20px;
    text-align: center;
    display: block;
}