前言

CSS 原生 title 属性太丑，需要重写

效果

改造

HTML

• 代码第2行，tip-label 自定义属性

<div class="tools">
    <div class="btn tip" v-for="item of list" :key="item.icon" :tip-label="item.label">
        <i :class="item.icon" />
    </div>
</div>

css

• 代码第6行，使用函数attr，获取tip-label 属性的值；
• 代码第 17、18 行，根据具体的功能效果调试；
• 代码第 23、29 行，用于显示；

.tip {
    cursor: pointer;
    position: relative;
}
.tip:after {
    content: attr(tip-label);
    white-space: nowrap;
    border-radius: 4px;
    box-sizing: border-box;
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
    z-index: 1;
    border: 1px solid #9E9D24;
    background: #F0F4C3;
    color: #9E9D24;

    position: absolute;    
    right: -10%;
    top: 45px;
    padding: 4px 10px;
    line-height: 1.6;
    font-size: 14px;

    opacity: 0;
    pointer-events: none;
    transition: .382s ease;
    transform: translateY(-50%);
}
.tip:hover:after {
    opacity: 1;
    transform: translateY(0%);
}

完整示例

<template>
    <div class="main">
        <div class="tools">
            <div class="btn tip" v-for="item of list" :key="item.icon" :tip-label="item.label">
                <i :class="item.icon" />
            </div>
        </div>
    </div>
</template>
<script>
export default {
    data() {
        return {
            list: [
                { label: '放大', icon: 'el-icon-circle-plus' },
                { label: '缩小', icon: 'el-icon-remove' },
                { label: '警告', icon: 'el-icon-warning' },
                { label: '问题', icon: 'el-icon-question' },
                { label: '关闭', icon: 'el-icon-error' },
            ]
        }
    }
}
</script>
<style lang="stylus" scoped>
.main {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #555;
    padding: 30px;
    .tools {
        width: max-content;
        display: flex;
        flex-direction: row;
        background: #F9FBE7;
        box-shadow: 0px 0px 12px 0px rgba(0,0,0,0.25);
        border-radius: 28px;
        padding: 0 32px;
        .btn {
            cursor: pointer;
            i {
                color: red;
                font-size: 28px;
                margin: 5px;

            }
        }
    }
}
.tip {
    cursor: pointer;
    position: relative;
}
.tip:after {
    content: attr(tip-label);
    white-space: nowrap;
    border-radius: 4px;
    box-sizing: border-box;
    box-shadow: 0 2px 12px 0 rgba(0, 0, 0, 0.1);
    z-index: 1;
    border: 1px solid #9E9D24;
    background: #F0F4C3;
    color: #9E9D24;

    position: absolute;    
    right: -10%;
    top: 45px;
    padding: 4px 10px;
    line-height: 1.6;
    font-size: 14px;

    opacity: 0;
    pointer-events: none;
    transition: .382s ease;
    transform: translateY(-50%);
}
.tip:hover:after {
    opacity: 1;
    transform: translateY(0%);
}
</style>