0👍
✅
use % width only on container which is parent element, mostly I would recommend you to use percentages size for only 100%, to align on the full screnn, below 100% sizes as and currently on width it is risky because your layout will be dropped,I just changed your 30% to 250px, and aligned on center by using flex
.el-transfer-panel {
width: 250px;
}
.el-card{
display: flex;
align-items: center;
justify-content: center;
}
For LIVE view visit JSFIDDLE
Source:stackexchange.com