User:TerminalFlow/styles.css

.step {
        width: 112px;
        height: 52px;
      }
.step > img {
	width: 100%;
	height: 100%;
	z-index: 0;
}
.content {
	opacity: 0;
        transition: opacity 0.1s linear;
        transform: translate(-50%,-50px);
        left: 50%;
        position: absolute;
        background-color: #fff;
        border: 2px solid gray;
        padding: 3px;
        box-sizing: border-box;
        border-radius: 4px;
        cursor:pointer;
        z-index: 114514;
}
.step:hover .content {
	opacity: 1;
}