element-plus/docs/examples/dropdown/sizes.vue

<template>
  <el-dropdown size="large" split-button type="primary">
    Large
    <template #dropdown>
      <el-dropdown-menu>
        <el-dropdown-item>Action 1</el-dropdown-item>
        <el-dropdown-item>Action 2</el-dropdown-item>
        <el-dropdown-item>Action 3</el-dropdown-item>
        <el-dropdown-item>Action 4</el-dropdown-item>
      </el-dropdown-menu>
    </template>
  </el-dropdown>

  <el-dropdown split-button type="primary">
    Default
    <template #dropdown>
      <el-dropdown-menu>
        <el-dropdown-item>Action 1</el-dropdown-item>
        <el-dropdown-item>Action 2</el-dropdown-item>
        <el-dropdown-item>Action 3</el-dropdown-item>
        <el-dropdown-item>Action 4</el-dropdown-item>
      </el-dropdown-menu>
    </template>
  </el-dropdown>

  <el-dropdown size="small" split-button type="primary">
    Small
    <template #dropdown>
      <el-dropdown-menu>
        <el-dropdown-item>Action 1</el-dropdown-item>
        <el-dropdown-item>Action 2</el-dropdown-item>
        <el-dropdown-item>Action 3</el-dropdown-item>
        <el-dropdown-item>Action 4</el-dropdown-item>
      </el-dropdown-menu>
    </template>
  </el-dropdown>
</template>
<style scoped>
.example-showcase .el-dropdown + .el-dropdown {
  margin-left: 15px;
}
</style>