div {
    margin: 1em;
}

em {
    background: aqua;
}

#resultBlock {
    display: none;
}

#list, #detail {
    background: #f0f0f0;
    width: 40%;
    padding: 1em;
}

#list li:hover {
    background: aqua;
}

#list {
    left: 1em;
}

#detail {
    top: 2em;
    right: 1em;
    position: fixed;
}