使用css/html将svg图标添加到按钮中？

我想在按钮标签内显示图标,请参阅下面的代码:

#header-search {
  width: 200px;
  background: @header-color;
  color: white;
  font-size: 12pt;
  border: 0px solid;
  outline: 0;
  vertical-align: -50%;
}

#header-search::-webkit-input-placeholder {
  color: white;
}

#search-button {
  background: #FFFFFF;
  vertical-align: -50%;
}

.header-view-logo {
  vertical-align: middle;
}

#search-icon {
  fill: white;
}

#search-button {
  width: 100px;
  height: 50px;
}
    
#search-button svg {
  width: 25px;
  height: 25px;
}