CSS to achieve zoom in and out close button (example code)

<template>
  <div class="windowAction">
    <button class="min">Zoom out</button>
    <button class="fullpage">Zoom in</button>
    <button class="close">Close</button>
  </div>
</template>

<script>
export default {
  data() {
    return {
      flag_fullpageWebView: 1
    };
  }
};
</script>

<style lang="scss" scoped>
.windowAction {
  margin-top: -5px;
  -webkit-app-region: no-drag;
  min-width: 70px;
  text-align: right;
  button {
    &:hover {
      color: #a8aabd;
    }
  }
  .min {
    width: 14px;
    height: 14px;
    background-color: transparent;
    font-size: 0;
    margin-right: 18px;
    position: relative;
    color: #878896;
    &:after {
      content: "";
      width: 100%;
      position: absolute;
      left: 0;
      bottom: 0;
      border-bottom: 2px solid;
    }
  }
  .fullpage {
    width: 16px;
    height: 16px;
    color: #878896;
    border: 2px solid;
    background-color: transparent;
    font-size: 0;
    margin-right: 18px;
  }
  .close {
    width: 18px;
    height: 18px;
    font-size: 0;
    background-color: transparent;
    position: relative;
    color: #878896;
    transform: rotate(45deg) translate(-2px, 2px);
    &:before,
    &:after {
      content: "";
      position: absolute;
    }
    &:before {
      width: 100%;
      left: 0;
      top: 50%;
      transform: translateY(-50%);
      border-top: 2px solid;
    }
    &:after {
      height: 100%;
      left: 50%;
      top: 0;
      transform: translateX(-50%);
      border-left: 2px solid;
    }
  }
}
</style>