miuui-jun/lib/src/button/style/index.css

.miu-button {
  display: inline-block;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  background: #fff;
  border: 1px solid #dcdfe6;
  color: #606266;
  -webkit-appmiurance: none;
  text-align: center;
  box-sizing: border-box;
  outline: none;
  margin: 0;
  transition: 0.1s;
  font-weight: 500;
  padding: 12px 20px;
  font-size: 14px;
  border-radius: 4px;
}
.miu-button.miu-button--primary {
  color: #fff;
  background-color: #409eff;
  border-color: #409eff;
}
.miu-button.miu-button--primary:hover {
  background: #66b1ff;
  border-color: #66b1ff;
  color: #fff;
}