rt-sim-training-client/src/views/error-page/404.vue

<template>
  <div class="wscn-http404-container">
    <div class="wscn-http404">
      <div class="pic-404">
        <img class="pic-404__parent" src="@/assets/404_images/404.png" alt="404">
        <img class="pic-404__child left" src="@/assets/404_images/404_cloud.png" alt="404">
        <img class="pic-404__child mid" src="@/assets/404_images/404_cloud.png" alt="404">
        <img class="pic-404__child right" src="@/assets/404_images/404_cloud.png" alt="404">
      </div>
      <div class="bullshit">
        <div class="bullshit__oops">OOPS!</div>
        <div class="bullshit__info">All rights reserved
          <a style="color:#20a0ff" href="https://wallstreetcn.com" target="_blank">wallstreetcn</a>
        </div>
        <div class="bullshit__headline">{{ message }}</div>
        <div class="bullshit__info">Please check that the URL you entered is correct, or click the button below to
          return to the homepage.</div>
        <button @click="back" class="bullshit__return-home">Back</button>
      </div>
    </div>
  </div>
</template>

<script>
export default {
	name: 'Page404',
	computed: {
		message() {
			return 'The webmaster said that you can not enter this page...'
		}
	},
    methods: {
        back() {
	        this.$router.go(-1);
        }
    }
}
</script>

<style lang="scss" scoped>
  .wscn-http404-container {
    transform: translate(-50%, -50%);
    position: absolute;
    top: 40%;
    left: 50%;
  }

  .wscn-http404 {
    position: relative;
    width: 1200px;
    padding: 0 50px;
    overflow: hidden;

    .pic-404 {
      position: relative;
      float: left;
      width: 600px;
      overflow: hidden;

      &__parent {
        width: 100%;
      }

      &__child {
        position: absolute;

        &.left {
          width: 80px;
          top: 17px;
          left: 220px;
          opacity: 0;
          animation-name: cloudLeft;
          animation-duration: 2s;
          animation-timing-function: linear;
          animation-fill-mode: forwards;
          animation-delay: 1s;
        }

        &.mid {
          width: 46px;
          top: 10px;
          left: 420px;
          opacity: 0;
          animation-name: cloudMid;
          animation-duration: 2s;
          animation-timing-function: linear;
          animation-fill-mode: forwards;
          animation-delay: 1.2s;
        }

        &.right {
          width: 62px;
          top: 100px;
          left: 500px;
          opacity: 0;
          animation-name: cloudRight;
          animation-duration: 2s;
          animation-timing-function: linear;
          animation-fill-mode: forwards;
          animation-delay: 1s;
        }

        @keyframes cloudLeft {
          0% {
            top: 17px;
            left: 220px;
            opacity: 0;
          }

          20% {
            top: 33px;
            left: 188px;
            opacity: 1;
          }

          80% {
            top: 81px;
            left: 92px;
            opacity: 1;
          }

          100% {
            top: 97px;
            left: 60px;
            opacity: 0;
          }
        }

        @keyframes cloudMid {
          0% {
            top: 10px;
            left: 420px;
            opacity: 0;
          }

          20% {
            top: 40px;
            left: 360px;
            opacity: 1;
          }

          70% {
            top: 130px;
            left: 180px;
            opacity: 1;
          }

          100% {
            top: 160px;
            left: 120px;
            opacity: 0;
          }
        }

        @keyframes cloudRight {
          0% {
            top: 100px;
            left: 500px;
            opacity: 0;
          }

          20% {
            top: 120px;
            left: 460px;
            opacity: 1;
          }

          80% {
            top: 180px;
            left: 340px;
            opacity: 1;
          }

          100% {
            top: 200px;
            left: 300px;
            opacity: 0;
          }
        }
      }
    }

    .bullshit {
      position: relative;
      float: left;
      width: 300px;
      padding: 30px 0;
      overflow: hidden;

      &__oops {
        font-size: 32px;
        font-weight: bold;
        line-height: 40px;
        color: #1482f0;
        opacity: 0;
        margin-bottom: 20px;
        animation-name: slideUp;
        animation-duration: 0.5s;
        animation-fill-mode: forwards;
      }

      &__headline {
        font-size: 20px;
        line-height: 24px;
        color: #222;
        font-weight: bold;
        opacity: 0;
        margin-bottom: 10px;
        animation-name: slideUp;
        animation-duration: 0.5s;
        animation-delay: 0.1s;
        animation-fill-mode: forwards;
      }

      &__info {
        font-size: 13px;
        line-height: 21px;
        color: grey;
        opacity: 0;
        margin-bottom: 30px;
        animation-name: slideUp;
        animation-duration: 0.5s;
        animation-delay: 0.2s;
        animation-fill-mode: forwards;
      }

      &__return-home {
        display: block;
        float: left;
        width: 110px;
        height: 36px;
        background: #1482f0;
        border-radius: 100px;
        text-align: center;
        color: #ffffff;
        opacity: 0;
        font-size: 14px;
        line-height: 36px;
        cursor: pointer;
        animation-name: slideUp;
        animation-duration: 0.5s;
        animation-delay: 0.3s;
        animation-fill-mode: forwards;
      }

      @keyframes slideUp {
        0% {
          transform: translateY(60px);
          opacity: 0;
        }

        100% {
          transform: translateY(0);
          opacity: 1;
        }
      }
    }
  }
</style>