svg代码

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="margin:auto;background:#fff;display:block;" width="200px" height="200px" viewBox="0 0 100 100" preserveAspectRatio="xMidYMid">
<defs>
  <linearGradient id="ldio-lhauad5xoso-gradient" x1="0%" x2="0%" y1="0%" y2="100%">
    <stop offset="10%" stop-color="black" stop-opacity="0"></stop>
    <stop offset="100%" stop-color="white" stop-opacity="1"></stop>
  </linearGradient>
  <mask id="ldio-lhauad5xoso-mask" maskUnits="userSpaceOnUse" x="0" y="0" width="100" height="100">
    <rect x="22" y="8" width="56" height="54" fill="url(#ldio-lhauad5xoso-gradient)"></rect>
  </mask>
  <path id="ldio-lhauad5xoso-steam" d="M0-4c-2.1,2.6-2.1,6.4,0,9l0,0c2.1,2.6,2.1,6.4,0,9l0,0c-2.1,2.6-2.1,6.4,0,9l0,0c2.1,2.6,2.1,6.4,0,9l0,0 c-2.1,2.6-2.1,6.4,0,9l0,0c2.1,2.6,2.1,6.4,0,9c-2.1,2.6-2.1,6.4,0,9l0,0c2.1,2.6,2.1,6.4,0,9l0,0c-2.1,2.6-2.1,6.4,0,9l0,0 c2.1,2.6,2.1,6.4,0,9l0,0c-2.1,2.6-2.1,6.4,0,9l0,0c2.1,2.6,2.1,6.4,0,9c-2.1,2.6-2.1,6.4,0,9l0,0c2.1,2.6,2.1,6.4,0,9l0,0 c-2.1,2.6-2.1,6.4,0,9h0c2.1,2.6,2.1,6.4,0,9h0c-2.1,2.6-2.1,6.4,0,9h0c2.1,2.6,2.1,6.4,0,9" stroke-width="6" stroke-linecap="round" fill="#f00" stroke="#404fff"></path>
</defs>
<g mask="url(#ldio-lhauad5xoso-mask)">
  <use x="29" y="-1.0666" xlink:href="#ldio-lhauad5xoso-steam">
    <animate attributeName="y" values="4;-14" keyTimes="0;1" dur="1s" repeatCount="indefinite" begin="-0.5s"></animate>
  </use>
  <use x="47" y="-0.566604" xlink:href="#ldio-lhauad5xoso-steam">
    <animate attributeName="y" values="0;-18" keyTimes="0;1" dur="1s" repeatCount="indefinite" begin="-0.25s"></animate>
  </use>
  <use x="64" y="-6.0666" xlink:href="#ldio-lhauad5xoso-steam">
    <animate attributeName="y" values="-4;-22" keyTimes="0;1" dur="1s" repeatCount="indefinite" begin="-0.3333333333333333s"></animate>
  </use>
</g>
<!-- f8b26a -->
<path d="M81.2,52.5l-5.2,0V49c0-1.6-1.3-3-3-3H20c-1.6,0-3,1.3-3,3v11.6C17,71.3,25.7,80,36.5,80h20.1 c7.1,0,13.3-3.8,16.7-9.5h8.3c5.2,0,9.3-4.4,9-9.6C90.2,56.1,86,52.5,81.2,52.5z M81.5,67.5h-6.8c0.8-2.2,1.3-4.5,1.3-7v-5h5.5 c3.3,0,6,2.7,6,6S84.8,67.5,81.5,67.5z" fill="#404fff"></path>
<path d="M78.8,88H19.2c-1.1,0-2-0.9-2-2s0.9-2,2-2h59.5c1.1,0,2,0.9,2,2S79.9,88,78.8,88z" fill="#404fff"></path>
</svg>

vue代码

<template lang="pug">
    transition(name="fade")
        .loading(v-if="loading" )
            img(src="@common/assets/svg/loading-coffee.svg" alt="" :class="loading?'':'hide'")
</template>

<script>
export default {
    name: 'loading',
    props: {
        loading: {
            type: Boolean,
            default: true,
        },
    },
}
</script>

<style scoped lang="stylus">
.loading {
    position fixed
    left 0
    top 0
    width 100%
    height 100vh
    display flex
    align-items center
    justify-content center
    z-index 1000
    background #fff
    img {
        transition 0.5s
        width 8rem
    }
}
.fade-enter-active, .fade-leave-active {
    transition opacity 0.5s
}
.fade-enter, .fade-leave-to { /* .fade-leave-active below version 2.1.8 */
    opacity 0
    img {
        transform scale(0)
    }
}
</style>